{tag:53} 1990 Chevrolet Corvette Convertible
Chevrolet Corvette
Supercharged

Project: Green Reaper

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General Vehicle Information

Year: 1990
Manufacturer: Chevrolet
Model: Corvette
Trim: Convertible
Exterior Color: Polo Green
Interior Color: Gray
Current Mileage: 
Not Available
Chassis/VIN: 
Not Available
Owner: @JRW - Flemington, NJ, United States

Vehicle Log

Date
Entry
Type


vehicle specifications

Specifications

Motor: Supercharged 396CI L98 V8
Boost: 14 PSI
Intercooling: Air-to-Air
Transmission: 700R-4 4-Speed Automatic
Drive Configuration: RWD
engine specification header

Engine Specs

The engine was purchased by the previous owner, but I received documentation showing that its an Agostino Racing Engines motor that was built in Pickering, Ontario and later installed by The Corvette Shop, Inc. in Dallas, Texas. The ARE L98 was bored and stoked to 396ci with a 9.01:1 compression ratio and was designed to run with power adders. It is currently fed by an ATI D-1 Procharger and a TNT 200-shot wet nitrous system. Fuel management is handled by a FAST XFI system.

Component Manufacturer Specification / Part #
Connecting Rods Eagle Length: 5850
Crankshaft Callies Stroke: 3.875
Pistons Diamond +27.8cc Dish
Camshaft Cloyes CC SR 48725/48735 SR 114
Rocker Arms Crane Aluminum 1.6/1.6
Valve Springs Comp Cams 977-16
Pushrods Comp Cams Length: 8.950
Cylinder Heads Air Flow Research 1041 - 195 Corvette 68cc
transmission and drivetrain specification header

Transmission & Drivetrain Specs

The PPI revealed that the stock 700r4 transmission was staring to slip which wasn't a surprise knowing the power the engine was making. It was removed and completely rebuilt with cryo-treated internals and a manual valve body.

The Dana 36 rear end was replaced with a beefier Dana 44 unit with cryo-treated 3.45 gears. A custom aluminum driveshaft was also installed.

Exterior and Body Details

To set the exterior apart from standard C4 Corvettes, a Shinoda-Mears full aero package will be added.  Components include: front bumper, lower front valance, side panels, door caps, rocket panels and two piece rear bumper with spoiler.

The Shinoda-Mears Corvette body kit was tested by GM in their wind tunnel and they found that the aerodynamics were better than the regular production Corvette. Shinoda’s Corvette had a drag coefficient .30 vs .34 for the regular C4 Corvette.

Interior Details

The interior and safety systems are still a work in progress. The car has been fitted with a 6-point roll bar with swing out door bars. Corbeau race seats and 5-point harnesses will keep the driver and passenger in place. More to come!

Safety Equipment

  • 5 Point Harness
  • Driveshaft Loop
  • 6 Point Roll Bar
  • Master Cutoff Switch

Stereo System & Electronics

The stereo system has not been modified.

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