Second-generation Chevrolet Camaro
Encyclopedia
The second generation Chevrolet Camaro
is a pony car
by the Chevrolet
division of General Motors
produced for the 1970 through 1981 model year
s. It was introduced February 26, 1970 It was longer, lower, and wider than the first generation Camaro. A convertible body-type was no longer available. GM engineers have said the second generation is much more of "A Driver's Car" than its predecessor.
structure utilizing a front subframe, A-arm and coil spring front suspension, and rear leaf springs.
The chassis and suspension of the second generation were greatly refined in both performance and comfort; base models offered significant advances in sound-proofing, ride isolation, and road-holding. Extensive experience Chevrolet engineers had gained racing the first-generation led directly to advances in second-generation Camaro steering, braking, and balance. Although it began its run with a number of high-performance configurations, as the 1970s progressed, the Camaro grew less powerful, succumbing, like many production cars of the era, to the pressures of tightening emissions regulations and a fuel crisis. Major styling changes were made in 1974 and 1978; 1981 was the final model year for the second generation Camaro.
— the base engine was now the 250 cu in (4.1 l) six, rated at 155 hp. The top performing motor was the 396 cu in (6.5 l) L78 rated at 375 hp. Starting in 1970, the big block V8s (nominally 396 cu in (6.5 l)) actually displaced 402 cu in (6.6 l), yet Chevrolet chose to retain the 396 badging. Two 454 cu in (7.4 l) engines (the LS6 and LS7) were listed on early specification sheets and in some sales brochures but never made it into production. Besides the base model, buyers could select the Rally Sport option with a distinctive nose and bumper, a Super Sport package, and the Z-28 Special Performance Package (priced at US$572.95) featuring a new high-performance LT-1 360 hp 380 lbft of torque 350 cu in (5.7 l) V8. The LT-1, an engine built from the ground up using premium parts and components, was a much better performer overall than the previous 302 cu in (5 l) V8s used in 1967-69 Z-28s; greater torque and less-radical cam, coupled with the 780 cfm Holley four-barrel, permitted the Z-28 to be available with the 3-speed Turbo Hydramatic 400 automatic transmission
as an option to the four-speed manual for the first time.
The new body style featured a fastback roofline and ventless full door glass with no rear side quarter windows. Doors were wider to permit easier access to the rear seat and new pull-up handles replaced the old handles for which the lower button had to be pushed in to lock the door. The roof was a new double-shell unit for improved rollover protection and noise reduction. The base model featured a separate bumper/grille design with parking lights under the bumper while the Rally Sport option included a distinctive grille surrounded by a flexible Endura material along with round parking lights beside the headlights and bumperettes surrounding on both sides of the grille. The rear was highlighted by four round taillights similar to the Corvette. A convertible
was not offered, making this the only Camaro generation not to offer one.
The '70½ was the first Camaro offered with a rear stabilizer bar. The four-wheel disc brake option (RPO JL8 of 1969) was dropped.
Inside, a new curved instrument panel featured several round dials for gauges and other switches directly in front of the driver while the lower section included the heating/air conditioning controls to the driver's left and radio, cigar lighter and ashtray in the center and glovebox door on the right. New Strato bucket seats, unique to 1970 models, featured squared off seatbacks and adjustable headrests and the rear seating consisted of two bucket cushions and a bench seat back due to the higher transmission
tunnel. The optional center console, with standard Hurst
shifter, was now integrated into the lower dashboard with small storage area or optional stereo tape player. The standard interior featured all-vinyl upholstery and a matte black dashboard finish while an optional custom interior came with upgraded cloth or vinyl upholstery and woodgrain trim on dash and console.
The 1970 model was introduced in February 1970, halfway through the model year. This caused some people to refer to it as a "1970½." model; all were 1970 models. The 1970 model year vehicles are generally regarded as the most desirable of the early 2nd generation Camaros, since the performance of following years was reduced by the automobile emissions control
systems of the period and later the addition of heavy federally mandated bumpers.
Production and sales dropped due to a 67-day corporate-wide strike at GM that coincided with the introduction of the 1971 models in late September 1970, along with a continued declining interest in the ponycar market fueled by skyrocketing insurance rates for high-performance cars. Rumors of the possible cancellation of the Camaro after 1972 began to surface and were nearly confirmed a year later when another worker's strike hit the assembly plant at Norwood, Ohio
, which was the only plant building Camaros and Firebird
s.
The 1972 Camaro suffered two major setbacks. The UAW
strike at a GM assembly plant in Norwood disrupted production for 174 days, and 1,100 incomplete Camaros had to be scrapped because they could not meet 1973 federal bumper safety standards. Some at GM seriously considered dropping the Camaro and Firebird altogether, particularly while the corporation was under pressure to adapt its vast number of makes and models to difficult new regulations for emissions, safety, and fuel economy. Others pointed out the fiercely loyal followings the cars enjoyed and were convinced the models remained viable. The latter group eventually convinced those in favor of dropping the F-cars to reconsider, and Chevrolet would go on to produce 68,656 Camaros in 1972. Only 970 SS396s were produced in 1972, and this was the last year for the SS 396 and SS 350 models. This year the badging changed from "Z/28" to "Z28". Horsepower ratings continued to drop, not only due to lower compression and tighter emissions but, beginning with the 1972 model year, a switch from gross (on dynometer) to net ratings based on an engine in an actual vehicle with all accessories installed. With that, the 350 ci LT1 dropped from 330 gross horsepower in 1971 to 255 net for 1972 and the big-block 396/402 was now rated at 240 net horsepower compared to 300 gross horses in 1971.
safety legislation. The Rally Sport option with its chrome bumperettes on either side of an impact absorbing urethane grill surround continued for one more year due to creative bracing behind the front sheetmetal.
A new Type LT model was offered in 1973, with a quieter and better appointed interior, full instrumentation, Rally-style wheels, variable-ratio steering, sport mirrors, and hidden windshield wipers among other upgrades. The Super Sport package was dropped, and the big block 396 CID V8 was no longer available. Power was down due to new emissions standards, with the top rated 350 CID V8 producing 245 hp in the Z28. The engine also switch from solid-lifters to hydraulic tappets. Air conditioning became available as an option with this engine. The Z28 option could be ordered on both the sport coupe and LT models. When the Z28, Type LT, and Rally Sport options were combined, the usual Z28 badges, stripes, and graphics were deleted.
Other changes included a new console-mounted shifter for automatic transmissions similar to the Rally Sport Shifter used in Pontiac Firebirds replacing the Buick-like horseshoe shifter of previous Camaros, and the reintroduction of power windows to the option list for the first time since 1969 with the switches mounted in the console.
Recovering from the strike, Camaro sales increased to 96,751 units during a record sales year industry-wide.
Camaro sales increased to over 150,000 unit despite the energy crisis fueled by the Arab Oil Embargo. Two ponycar competitors left the stable this year as Ford downsized the Mustang to a subcompact based on the Pinto and Mercury upsized its Cougar to an intermediate-sized personal luxury car to compete with the Chevrolet Monte Carlo and Pontiac Grand Prix. Chrysler Corporation would discontinue the Plymouth Barracuda
and Dodge Challenger
during the course of the 1974 model year and American Motors would drop the Javelin
at the end of the year. During the mid-to-late 1970s, the Camaro and similar Pontiac Firebird would have the traditional ponycar market all to themselves and score record sales in the process.
The year 1975 was also the first for the catalytic converter, which was designed as a much more efficient way of reducing emissions than the previous air pump and other smog gear, allowing for finer tuning of engines to permit improved drivability and fuel economy. However, the converter spelled the end of true dual exhausts and mandated the use of lower octane unleaded gasoline, which was not only inferior in antiknock qualities but also more expensive than leaded regular gas, a great disadvantage at a time of dramatically rising gasoline prices in the aftermath of the 1973-74 Arab Oil Embargo. The catalytic converter and GM High Energy electronic ignition (previously a Z28 option, now made standard for 1975) were advertised among the components of "Chevrolet's new Efficiency System" which was promoted to offer other benefits to 1975 Camaro owners (in comparison to '74 models) that included extended maintenance intervals from 6,000 to 7500 miles (12,070.1 km) for oil/filter changes and spark plugs that lasted up to 22500 miles (36,210.2 km) compared to 10000 miles (16,093.4 km) on '74 models.
A new wraparound rear window was introduced for 1975 and the Camaro emblem moved from the center of the grille to above the grillework and the "Camaro" nameplate was deleted from the rear decklid. Also new block letter "Camaro" nameplates replaced the previous scripts on the front fenders. Interiors were revised slightly with new seat trim patterns and bird's-eye maple trim replacing the Meridian grained walnut on the instrument panel of LT models. Announced for this year was the availability of a leather interior option in the Camaro LT, but never saw the light of day as no production cars were equipped with real hide seats. Other developments included the availability of air conditioning with six-cylinder engines and standard radial tires on all models. Power door locks were a new option for 1975. The Rally Sport option returned after a one-year absence, but amounted to little more than an appearance package.
Despite the loss of the Z28, Camaro sales remained steady for 1975 at 145,770 units. With the demise of the other ponycars the previous year, Camaro and Pontiac's Firebird were now the only traditional ponycars left on the market, giving GM 100 percent penetration of this segment for the first time ever. Also, despite General Motors' policy against factory-sponsored racing efforts, Camaro began to make a name for itself on the track on the new International Race of Champions
(IROC) series with many top drivers winning trophies from behind the wheel of a Camaro year after year until the late 1980s.
insert in the rear tail section on the LT model. The 250 cubic-inch six-cylinder remained the standard engine in the sport coupe and a new 140-horsepower 305 cubic-inch V8 became the standard engine in the LT and base V8 option in the sport coupe. The larger 350 cubic-inch V8 was now only available with a four-barrel carburetor and 165 hp. Power brakes became standard on V8 models this year. The Camaro's popularity was soaring. Sales totals jumped significantly for 1976, the best year yet for the second generation, and were to improve even more dramatically as the decade progressed.
for a comfort-oriented public. The cars were also available with a Borg-Warner Super T-10 4-speed manual transmission
and minimal option packaging for those buyers interested in a performance-oriented vehicle. The half-year model was one of the few American high-performance vehicles available at the time. The car was capable of turning in quarter-mile times comparable to many of the 1960s muscle cars, and the chassis was developed to reward the driver with a first-class grand touring experience, capable of outstanding handling, especially in the hands of a competent high-performance driver. Several Z28s were sold as a stripped performance car, and in this trim the Camaro Z28 could outperform Pontiac Trans Ams and Corvettes on highways and canyon roads.
In other developments, intermittent wipers were offered as a new option and the 250-6 became the standard engine for both the sport coupe and luxury LT models. The 145-horsepower 305 continued as the base V8 and the four-barrel 350 optional on sport coupe and LT models was uprated to 170 hp. However, due to a controversial engine sharing program whereby 350CID Chevrolet engines found their way into Oldsmobile models, this particular engine was in short supply. In fact, for a significant period of time the only way a potential Camaro owner could purchase it was to either order a 4-speed manual transmission or upgrade to the Z28 model. This year the optional "Bumperettes" were offered for the LT models (front bumper only) and were mandatory for all Camaro models sold in the state of California.
Output set a record for the second-generation Camaro, with 218,853 coupes produced. And, Camaro outsold Ford's Mustang for the first time ever.
Available models for 1978 included Sport Coupe, RS, Type LT, Type LT/RS and Z28. Although some believe you could order a "Type LT/RS Z28", that is false. The Z28 had a stripe package that you could not delete, so the two tone paint of the Rally Sport (RS) would interfere. The Z28 had a 350ci that produced 185 bhp and produced 280 ft.lb. of torque, which ran with a four-barrel Quadrajet
carburetor. Z28s transmissions were either 4-speed, or a TH-350 3-speed.
, 231 CID in California. The 120 hp (4.4 L) V8 engine
became an option on the base, RS and Berlinetta models this year. The Z28 hood included a rear-pointing raised scoop (air induction) with a solenoid
operated flap which opened at full throttle, allowing the engine to breathe cooler air. Speedometers now read 85 mi/h, down from 130. Z28s had new optional grey 5-spoke rims (later used on the 1986–1988 Monte Carlo SS), a unique style upper and lower front grill and smaller revised graphics on its lower-door decals. The side scoops were also changed from a louvered design to a flatter one with a single opening. The 350 CID V8 was no longer available in the base, RS or Berlinetta models, being reserved only for the Z28 this year.
Chevrolet Camaro
The Chevrolet Camaro is an automobile manufactured by General Motors under the Chevrolet brand, classified as a pony car and some versions also as a muscle car. It went on sale on September 29, 1966, for the 1967 model year and was designed as a competing model to the Ford Mustang...
is a pony car
Pony car
Pony car is an American class of automobile launched and inspired by the Ford Mustang in 1964. The term describes an affordable, compact, highly styled car with a sporty or performance-oriented image.-Origins of the breed:...
by the Chevrolet
Chevrolet
Chevrolet , also known as Chevy , is a brand of vehicle produced by General Motors Company . Founded by Louis Chevrolet and ousted GM founder William C. Durant on November 3, 1911, General Motors acquired Chevrolet in 1918...
division of General Motors
General Motors
General Motors Company , commonly known as GM, formerly incorporated as General Motors Corporation, is an American multinational automotive corporation headquartered in Detroit, Michigan and the world's second-largest automaker in 2010...
produced for the 1970 through 1981 model year
Model year
The model year of a product is a number used worldwide, but with a high level of prominence in North America, to describe approximately when a product was produced, and indicates the coinciding base specification of that product....
s. It was introduced February 26, 1970 It was longer, lower, and wider than the first generation Camaro. A convertible body-type was no longer available. GM engineers have said the second generation is much more of "A Driver's Car" than its predecessor.
Overview
Dubbed "Super Hugger", the second generation Camaro was developed without the rush of the first generation and benefited from a greater budget in light of the success of the first generation. Although it was an all-new car, the basic mechanical layout of the new Camaro was familiar, engineered much like its predecessor with a unibodyMonocoque
Monocoque is a construction technique that supports structural load by using an object's external skin, as opposed to using an internal frame or truss that is then covered with a non-load-bearing skin or coachwork...
structure utilizing a front subframe, A-arm and coil spring front suspension, and rear leaf springs.
The chassis and suspension of the second generation were greatly refined in both performance and comfort; base models offered significant advances in sound-proofing, ride isolation, and road-holding. Extensive experience Chevrolet engineers had gained racing the first-generation led directly to advances in second-generation Camaro steering, braking, and balance. Although it began its run with a number of high-performance configurations, as the 1970s progressed, the Camaro grew less powerful, succumbing, like many production cars of the era, to the pressures of tightening emissions regulations and a fuel crisis. Major styling changes were made in 1974 and 1978; 1981 was the final model year for the second generation Camaro.
1970
Most of the engine and drivetrain components were carried over from 1969, with the exception of the 230 cu in (3.8 l) six-cylinderStraight-6
The straight-six engine or inline-six engine is a six-cylinder internal combustion engine with all six cylinders mounted in a straight line along the crankcase...
— the base engine was now the 250 cu in (4.1 l) six, rated at 155 hp. The top performing motor was the 396 cu in (6.5 l) L78 rated at 375 hp. Starting in 1970, the big block V8s (nominally 396 cu in (6.5 l)) actually displaced 402 cu in (6.6 l), yet Chevrolet chose to retain the 396 badging. Two 454 cu in (7.4 l) engines (the LS6 and LS7) were listed on early specification sheets and in some sales brochures but never made it into production. Besides the base model, buyers could select the Rally Sport option with a distinctive nose and bumper, a Super Sport package, and the Z-28 Special Performance Package (priced at US$572.95) featuring a new high-performance LT-1 360 hp 380 lbft of torque 350 cu in (5.7 l) V8. The LT-1, an engine built from the ground up using premium parts and components, was a much better performer overall than the previous 302 cu in (5 l) V8s used in 1967-69 Z-28s; greater torque and less-radical cam, coupled with the 780 cfm Holley four-barrel, permitted the Z-28 to be available with the 3-speed Turbo Hydramatic 400 automatic transmission
Automatic transmission
An automatic transmission is one type of motor vehicle transmission that can automatically change gear ratios as the vehicle moves, freeing the driver from having to shift gears manually...
as an option to the four-speed manual for the first time.
Convertible
A convertible is a type of automobile in which the roof can retract and fold away having windows which wind-down inside the doors, converting it from an enclosed to an open-air vehicle...
was not offered, making this the only Camaro generation not to offer one.
The '70½ was the first Camaro offered with a rear stabilizer bar. The four-wheel disc brake option (RPO JL8 of 1969) was dropped.
Inside, a new curved instrument panel featured several round dials for gauges and other switches directly in front of the driver while the lower section included the heating/air conditioning controls to the driver's left and radio, cigar lighter and ashtray in the center and glovebox door on the right. New Strato bucket seats, unique to 1970 models, featured squared off seatbacks and adjustable headrests and the rear seating consisted of two bucket cushions and a bench seat back due to the higher transmission
Transmission (mechanics)
A machine consists of a power source and a power transmission system, which provides controlled application of the power. Merriam-Webster defines transmission as: an assembly of parts including the speed-changing gears and the propeller shaft by which the power is transmitted from an engine to a...
tunnel. The optional center console, with standard Hurst
Hurst Performance
Hurst Performance, Inc. of Warminster Township, Pennsylvania, manufactured and marketed products for enhancing the performance of automobiles, most notably for muscle cars.-Products:...
shifter, was now integrated into the lower dashboard with small storage area or optional stereo tape player. The standard interior featured all-vinyl upholstery and a matte black dashboard finish while an optional custom interior came with upgraded cloth or vinyl upholstery and woodgrain trim on dash and console.
The 1970 model was introduced in February 1970, halfway through the model year. This caused some people to refer to it as a "1970½." model; all were 1970 models. The 1970 model year vehicles are generally regarded as the most desirable of the early 2nd generation Camaros, since the performance of following years was reduced by the automobile emissions control
Automobile emissions control
Vehicle emissions control is the study and practice of reducing the motor vehicle emissions -- emissions produced by motor vehicles, especially internal combustion engines....
systems of the period and later the addition of heavy federally mandated bumpers.
1971
The 1971 Camaro received only minor appearance changes from its 1970 counterpart. Inside, new high-back Strato bucket seats with built-in headrests replaced the 1970-only low-back seats with adjustable headrests. The biggest changes came under the hood due to a GM-corporate mandate all engines be designed to run on lower-octane regular leaded, low-lead, or unleaded gasoline, necessitating reductions in compression ratios and horsepower ratings. The 250 ci 6, 307 ci V8 and two-barrel 350 V8 were virtually unchanged as they were low-compression regular-fuel engines in 1970 and previous years, while the LT-1 350 V8 used in the Z/28 dropped from 360 to 330 hp due to compression ratio decline from 11.0:1 to 9.0:1, and the big 396/402 V8 dropped from 350 to 300 hp due to compression ratio drop from 10.25:1 to 8.5:1.Production and sales dropped due to a 67-day corporate-wide strike at GM that coincided with the introduction of the 1971 models in late September 1970, along with a continued declining interest in the ponycar market fueled by skyrocketing insurance rates for high-performance cars. Rumors of the possible cancellation of the Camaro after 1972 began to surface and were nearly confirmed a year later when another worker's strike hit the assembly plant at Norwood, Ohio
Norwood, Ohio
Norwood is the second most populous city in Hamilton County, Ohio, United States. The city is an enclave of the larger city of Cincinnati. The population was 21,675 at the 2000 census. Originally settled as an early suburb of Cincinnati in the wooded countryside north of the city, the area is...
, which was the only plant building Camaros and Firebird
Pontiac Firebird
The Pontiac Firebird was built by the Pontiac division of General Motors between 1967 and 2002. The Firebird was introduced the same year as the automaker's platform-sharing model, the Chevrolet Camaro...
s.
1972
United Auto Workers
The International Union, United Automobile, Aerospace and Agricultural Implement Workers of America, better known as the United Auto Workers , is a labor union which represents workers in the United States and Puerto Rico, and formerly in Canada. Founded as part of the Congress of Industrial...
strike at a GM assembly plant in Norwood disrupted production for 174 days, and 1,100 incomplete Camaros had to be scrapped because they could not meet 1973 federal bumper safety standards. Some at GM seriously considered dropping the Camaro and Firebird altogether, particularly while the corporation was under pressure to adapt its vast number of makes and models to difficult new regulations for emissions, safety, and fuel economy. Others pointed out the fiercely loyal followings the cars enjoyed and were convinced the models remained viable. The latter group eventually convinced those in favor of dropping the F-cars to reconsider, and Chevrolet would go on to produce 68,656 Camaros in 1972. Only 970 SS396s were produced in 1972, and this was the last year for the SS 396 and SS 350 models. This year the badging changed from "Z/28" to "Z28". Horsepower ratings continued to drop, not only due to lower compression and tighter emissions but, beginning with the 1972 model year, a switch from gross (on dynometer) to net ratings based on an engine in an actual vehicle with all accessories installed. With that, the 350 ci LT1 dropped from 330 gross horsepower in 1971 to 255 net for 1972 and the big-block 396/402 was now rated at 240 net horsepower compared to 300 gross horses in 1971.
1973
The 1973 model year incorporated standard impact-absorbing front bumper system to met new no-damage at 5 miles per hour (2.2 m/s) NHTSANational Highway Traffic Safety Administration
The National Highway Traffic Safety Administration is an agency of the Executive Branch of the U.S. government, part of the Department of Transportation...
safety legislation. The Rally Sport option with its chrome bumperettes on either side of an impact absorbing urethane grill surround continued for one more year due to creative bracing behind the front sheetmetal.
A new Type LT model was offered in 1973, with a quieter and better appointed interior, full instrumentation, Rally-style wheels, variable-ratio steering, sport mirrors, and hidden windshield wipers among other upgrades. The Super Sport package was dropped, and the big block 396 CID V8 was no longer available. Power was down due to new emissions standards, with the top rated 350 CID V8 producing 245 hp in the Z28. The engine also switch from solid-lifters to hydraulic tappets. Air conditioning became available as an option with this engine. The Z28 option could be ordered on both the sport coupe and LT models. When the Z28, Type LT, and Rally Sport options were combined, the usual Z28 badges, stripes, and graphics were deleted.
Other changes included a new console-mounted shifter for automatic transmissions similar to the Rally Sport Shifter used in Pontiac Firebirds replacing the Buick-like horseshoe shifter of previous Camaros, and the reintroduction of power windows to the option list for the first time since 1969 with the switches mounted in the console.
Recovering from the strike, Camaro sales increased to 96,751 units during a record sales year industry-wide.
1974
The 1974 Camaro grew seven inches (178 mm) longer thanks to new aluminum bumpers required to meet federal standards and a forward sloping grille. Round taillights were replaced with a rectangular wraparound design. It was the last year to have a flat rear window, with thick roof pillars. All later years had slimmer roof pillars and a wrap around rear window for better visibility.Camaro sales increased to over 150,000 unit despite the energy crisis fueled by the Arab Oil Embargo. Two ponycar competitors left the stable this year as Ford downsized the Mustang to a subcompact based on the Pinto and Mercury upsized its Cougar to an intermediate-sized personal luxury car to compete with the Chevrolet Monte Carlo and Pontiac Grand Prix. Chrysler Corporation would discontinue the Plymouth Barracuda
Plymouth Barracuda
The Plymouth Barracuda is a 2-door car that was manufactured by the Plymouth division of the Chrysler Corporation from 1964-1974.The first-generation Barracuda, a fastback A-body coupe based on the Plymouth Valiant, had a distinctive wraparound back glass and was available from 1964-1966.The...
and Dodge Challenger
Dodge Challenger
The Dodge Challenger is the name of three different generations of automobiles marketed by the Dodge division of Chrysler.The first generation Dodge Challenger was a pony car built from 1970 to 1974, using the Chrysler E platform and sharing major components with the Plymouth Barracuda. The second...
during the course of the 1974 model year and American Motors would drop the Javelin
AMC Javelin
The Javelin was a production version of one of the AMC AMX prototypes shown during the 1966 AMX project nationwide tour. Intended to rival other pony cars such as the Ford Mustang and Chevrolet Camaro. American Motor's Javelin debuted on 22 August 1967, for the 1968 model year...
at the end of the year. During the mid-to-late 1970s, the Camaro and similar Pontiac Firebird would have the traditional ponycar market all to themselves and score record sales in the process.
1975
The Z28 option was discontinued for 1975 despite an increase in sales to over 13,000 units in 1974 and similar popularity of Pontiac's Firebird Trans Am. Chevy dropped the Z28 due to ever-tightening emission standards that spelled the end of the higher-output versions of the 350 cubic-inch V8, rated at 245 hp in 1973 and 1974. Engines that were offered in 1975 continued to reflect the impact of these regulations in their declining horsepower ratings. Two 350 cid (5.7 L) V8s produced 145 hp (108 kW) and 155 hp (116 kW) (Horsepower losses can seem a bit exaggerated compared to earlier cars, however, their power ratings were now net as opposed to the prior gross ratings. SAE net power ratings (used since 1972) were taken from the engine crankshaft as before, but now all accessories had to be attached and operating, and all emissions equipment and a full production exhaust system had to be in place. These power-robbing additions — along with stringent new emissions laws and the equipment they required — were instrumental in creating the vastly smaller power figures found in subsequent cars. The manufacturers themselves also sometimes intentionally underrated engines for a variety of motives, notably avoiding provoking the insurance companies and federal regulators into enacting undesirable policies, but also sometimes to prevent lower priced models from stacking up too well on paper against their own more profitable high-end products.).The year 1975 was also the first for the catalytic converter, which was designed as a much more efficient way of reducing emissions than the previous air pump and other smog gear, allowing for finer tuning of engines to permit improved drivability and fuel economy. However, the converter spelled the end of true dual exhausts and mandated the use of lower octane unleaded gasoline, which was not only inferior in antiknock qualities but also more expensive than leaded regular gas, a great disadvantage at a time of dramatically rising gasoline prices in the aftermath of the 1973-74 Arab Oil Embargo. The catalytic converter and GM High Energy electronic ignition (previously a Z28 option, now made standard for 1975) were advertised among the components of "Chevrolet's new Efficiency System" which was promoted to offer other benefits to 1975 Camaro owners (in comparison to '74 models) that included extended maintenance intervals from 6,000 to 7500 miles (12,070.1 km) for oil/filter changes and spark plugs that lasted up to 22500 miles (36,210.2 km) compared to 10000 miles (16,093.4 km) on '74 models.
A new wraparound rear window was introduced for 1975 and the Camaro emblem moved from the center of the grille to above the grillework and the "Camaro" nameplate was deleted from the rear decklid. Also new block letter "Camaro" nameplates replaced the previous scripts on the front fenders. Interiors were revised slightly with new seat trim patterns and bird's-eye maple trim replacing the Meridian grained walnut on the instrument panel of LT models. Announced for this year was the availability of a leather interior option in the Camaro LT, but never saw the light of day as no production cars were equipped with real hide seats. Other developments included the availability of air conditioning with six-cylinder engines and standard radial tires on all models. Power door locks were a new option for 1975. The Rally Sport option returned after a one-year absence, but amounted to little more than an appearance package.
Despite the loss of the Z28, Camaro sales remained steady for 1975 at 145,770 units. With the demise of the other ponycars the previous year, Camaro and Pontiac's Firebird were now the only traditional ponycars left on the market, giving GM 100 percent penetration of this segment for the first time ever. Also, despite General Motors' policy against factory-sponsored racing efforts, Camaro began to make a name for itself on the track on the new International Race of Champions
International Race of Champions
International Race of Champions, better known as IROC, was a North American auto racing competition, promoted as an equivalent of an American All-Star Game or The Masters...
(IROC) series with many top drivers winning trophies from behind the wheel of a Camaro year after year until the late 1980s.
1976
Only minor appearance changes highlighted the 1976 Camaro, most notably a brushed metalBrushed metal
Brushed metal is metal that has been abraded , usually with a fine grit sandpaper. The brushing gives the metal a distinctive look, as it retains some but not all of its metallic lustre and is given a pattern of very fine lines. It can be compared to metal with several small scratches all running...
insert in the rear tail section on the LT model. The 250 cubic-inch six-cylinder remained the standard engine in the sport coupe and a new 140-horsepower 305 cubic-inch V8 became the standard engine in the LT and base V8 option in the sport coupe. The larger 350 cubic-inch V8 was now only available with a four-barrel carburetor and 165 hp. Power brakes became standard on V8 models this year. The Camaro's popularity was soaring. Sales totals jumped significantly for 1976, the best year yet for the second generation, and were to improve even more dramatically as the decade progressed.
1977
The Z28 was re-introduced to the buying public in the spring of 1977 as a 1977½ in response to dramatically increasing sales of Pontiac's Trans Am, which sold over 46,000 units in 1976 and accounted for half of all Firebird sales that year. Like the Trans Am, the revived Camaro Z28 was an instant hit and was powered by a 350 cubic-inch V8 with four-barrel carburetor and 185 horsepower (175 horses with California emissions equipment), with most cars sold equipped with air conditioning and an automatic transmissionAutomatic transmission
An automatic transmission is one type of motor vehicle transmission that can automatically change gear ratios as the vehicle moves, freeing the driver from having to shift gears manually...
for a comfort-oriented public. The cars were also available with a Borg-Warner Super T-10 4-speed manual transmission
Manual transmission
A manual transmission, also known as a manual gearbox or standard transmission is a type of transmission used in motor vehicle applications...
and minimal option packaging for those buyers interested in a performance-oriented vehicle. The half-year model was one of the few American high-performance vehicles available at the time. The car was capable of turning in quarter-mile times comparable to many of the 1960s muscle cars, and the chassis was developed to reward the driver with a first-class grand touring experience, capable of outstanding handling, especially in the hands of a competent high-performance driver. Several Z28s were sold as a stripped performance car, and in this trim the Camaro Z28 could outperform Pontiac Trans Ams and Corvettes on highways and canyon roads.
In other developments, intermittent wipers were offered as a new option and the 250-6 became the standard engine for both the sport coupe and luxury LT models. The 145-horsepower 305 continued as the base V8 and the four-barrel 350 optional on sport coupe and LT models was uprated to 170 hp. However, due to a controversial engine sharing program whereby 350CID Chevrolet engines found their way into Oldsmobile models, this particular engine was in short supply. In fact, for a significant period of time the only way a potential Camaro owner could purchase it was to either order a 4-speed manual transmission or upgrade to the Z28 model. This year the optional "Bumperettes" were offered for the LT models (front bumper only) and were mandatory for all Camaro models sold in the state of California.
Output set a record for the second-generation Camaro, with 218,853 coupes produced. And, Camaro outsold Ford's Mustang for the first time ever.
1978
For 1978, Chevrolet added a new front and rear bumper and added a hood scoop unlike the 1977 with only a decal. Sales topped all previous models with 272,631, 54,907 of those are the RPO Z28 "Special Performance Package".Available models for 1978 included Sport Coupe, RS, Type LT, Type LT/RS and Z28. Although some believe you could order a "Type LT/RS Z28", that is false. The Z28 had a stripe package that you could not delete, so the two tone paint of the Rally Sport (RS) would interfere. The Z28 had a 350ci that produced 185 bhp and produced 280 ft.lb. of torque, which ran with a four-barrel Quadrajet
Quadrajet
In automobile mechanics, the Quadrajet is a four-barrel carburetor made by the Rochester Products Division of GM that was widely used in General Motors motor vehicles until 1990...
carburetor. Z28s transmissions were either 4-speed, or a TH-350 3-speed.
1979
The biggest changes for 1979 were the introduction of the luxury-oriented Berlinetta model, replacing the Type LT, and a restyled instrument panel with a much flatter appearance than the previous wraparound design (although the gauges themselves remained in the same places as before). The base models, RS and Z28 remained, the Z28s now came with a front spoiler and fender flares much like its Pontiac Trans Am twin had, and now came with "Z28" decals that ran from the beginning of the front flares to the bottoms of the doors. Electric rear window defroster became optional this year, replacing the old blower type. Sales for 1979 were the highest ever for any generation Camaro before or since, numbering 282,571 units. Engine choices remained with the 250 I6 standard in the base and RS models, with the 305 2bbl being an option and standard on the Berlinetta.1980
For 1980 the aged 250 CID inline-six was replaced with a 229 CID V6 engineV6 engine
A V6 engine is a V engine with six cylinders mounted on the crankcase in two banks of three cylinders, usually set at either a right angle or an acute angle to each other, with all six pistons driving a common crankshaft...
, 231 CID in California. The 120 hp (4.4 L) V8 engine
V8 engine
A V8 engine is a V engine with eight cylinders mounted on the crankcase in two banks of four cylinders, in most cases set at a right angle to each other but sometimes at a narrower angle, with all eight pistons driving a common crankshaft....
became an option on the base, RS and Berlinetta models this year. The Z28 hood included a rear-pointing raised scoop (air induction) with a solenoid
Solenoid
A solenoid is a coil wound into a tightly packed helix. In physics, the term solenoid refers to a long, thin loop of wire, often wrapped around a metallic core, which produces a magnetic field when an electric current is passed through it. Solenoids are important because they can create...
operated flap which opened at full throttle, allowing the engine to breathe cooler air. Speedometers now read 85 mi/h, down from 130. Z28s had new optional grey 5-spoke rims (later used on the 1986–1988 Monte Carlo SS), a unique style upper and lower front grill and smaller revised graphics on its lower-door decals. The side scoops were also changed from a louvered design to a flatter one with a single opening. The 350 CID V8 was no longer available in the base, RS or Berlinetta models, being reserved only for the Z28 this year.