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The Turbo Hydra-Matic Automatic Transmission consisted of a 3-element hydraulic torque converter and compound planetary gear set. It was equipped with the following gear ratios: 1st Gear - 2.48:1, 2nd Gear - 1.48:1, and 3rd Gear - 1.00:1.
The M40 Turbo Hydra-Matic Automatic Transmission was a no-cost option with the base 350 cubic inch, 200 horsepower engine, but cost an additional $97 when ordered with the 454 cubic inch, 270 horsepower LS5 engine. It was not available with the LT1 or the ZR1 options.
Tilt Telescopic Steering Column (N37) - An optional, adjustable steering column and tilt-angle adjustable steering wheel.
The Telescopic Steering Column changed the drivers distance from the steering wheel by literally telescoping the steering wheel closer to or further away from the vehicle operator.
Power Steering (N40) - Hydraulically assisted power steering.
This option was not available to consumers when the RPO ZR1 was ordered.
California Emission Test (YF5) - An assembly line emissions test to conform with California registration requirements.
Not available when the LS5 engine was ordered with the car.
Special Purpose Engine Package (ZR1) - Optional performance and handling upgrade.
The ZR1 package included the LT1 engine, heavy-duty, close-ratio 4-speed manual transmission, heavy-duty power brakes, transistor ignition, special aluminum radiator, and special springs, shocks, and front and rear stabilizer bars (although ZR1's have been documented with and without rear stabilizers.)
1972 ZR1's did not have metal fan shrouds.
When the ZR1 option was ordered, the following options were not available on the 1972 Corvette: Power Windows (A31), Rear Window Defroster (C50), Air Conditioning (C60), Power Steering (N40), Deluxe Wheel Covers (P02), AM-FM Radio (U69), AM-FM Radio, Stereo (U79).
Repeal of the Federal Excise Tax on December 11, 1971 reduced retail prices.
There were virtually no appearance changes for the 1972 model year, but the significance of this model year is that it represented the "end of an era" for the third-generation Corvette. The 1972 Corvette was the last to feature both front and rear chrome bumpers, a bright egg-crate grill, side-fender grills (later models do have function vents and some have vent trim), and a removable rear window, which was a feature that was unique for the 1968-1972 model years.
The 1972 Corvette did not include the fiber-optic light-monitoring system used in 1968-1971 models, although the previously optional alarm system was now a standard feature (the horn sounding type) and was included in the car's base price.
The 1972 decrease in horsepower rating was mainly the result of the measurement criteria. While previous horsepower ratings were measured in "gross" output of the engine, the 1972 ratings used a more realistic, more real-world "net" horsepower. The net horsepower took into consideration losses in horsepower from the air cleaners, exhaust systems, and accessories.
1972 CORVETTE VEHICLE SERIAL NUMBER PLATE
For all 1972 Corvettes, the location of the Vehicle Identification Number (VIN) is stamped on a plate attached to the left front body hinge pillar. (SeeFigure 1below.)