1990 ZR-1
The 1990 ZR-1 is powered by a 32-valve, 5.7-liter, port-fuel-injected engine with an aluminum black and aluminum heads for 375hp at 6200 RPM and a torque peak of 370 lb-ft. at 4200 RPM. Road tests found the ZR-1 can go from 0 to 60 in 4.5 seconds and 0 to 100 in 10.4 seconds
Zahnradfabrik Friedrichshafen (ZF) AG designed the six-speed transmission especially for the Corvette. It is fully synchronized and has an internal clutch which is an internal-rail shift mechanism and a hydraulically actuated 280-mm diameter pull-type.
Heat was a big concern that would be addressed with hood and side vents. Hydraulic oil coolers and massive intake scoops on the front facia were also used to help combat engine heat.
Engine |
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| Type | 32-Valve, Port-Fuel-Injection | |||
| Bore/Stroke | 4.00 x 3.48-inches | |||
| Displacement | 350 cubic inches | |||
| Compression | 11.0:1 | |||
| Horsepower | 375 bhp @ 6,200 RPM | |||
| Torque | 370 lb-ft @ 4200 RPM | |||
Transmission |
Six-Speed Manual | 4-speed Automatic | ||
| Gear | Ratio | Ratio | ||
| 1st | 2.68 | 3.06 | ||
| 2nd | 1.80 | 1.63 | ||
| 3rd | 1.31 | 1.00 | ||
| 4th | 1.00 | 0.70 | ||
| 5th | 0.75 | |||
| 6th | 0.50 | |||
LT5 32-Valve ZR-1 Engine
