Engine type for 1990 coupe
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
Originally Posted by Roper1
I have a 1990 coupe and was wondering how you tell what engine type you have?
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
The easy way is to look at the VIN. The 5th digit in the VIN determines the car model: Y is the standard Corvette, a Z is the ZR-1. The 8th digit is the engine code: An 8 is the L98, a J is the LT5.
The L98 motor was the "standard" motor in coupes and convertibles. The LT5 motor is unique to the ZR-1 model. All ZR-1 bodies will be 3" wider at the rear (look for a 1.5" black spacer on either side of the rear license plate and a "power key" on the console under the A/C controls).
All ZR-1's were 6-speeds. L98 motors got either an auto or 6-speed. The 90 ZR-1 got a rounded rear fascia like the 91 and later cars.
The 1990 L98 had two horsepower ratings based on the body style. The coupe was rated at 250HP and the vert was 245HP. This was due to slightly different mufflers on the 'vert. The engines were identical.
The L98 motor was the "standard" motor in coupes and convertibles. The LT5 motor is unique to the ZR-1 model. All ZR-1 bodies will be 3" wider at the rear (look for a 1.5" black spacer on either side of the rear license plate and a "power key" on the console under the A/C controls).
All ZR-1's were 6-speeds. L98 motors got either an auto or 6-speed. The 90 ZR-1 got a rounded rear fascia like the 91 and later cars.
The 1990 L98 had two horsepower ratings based on the body style. The coupe was rated at 250HP and the vert was 245HP. This was due to slightly different mufflers on the 'vert. The engines were identical.
Last edited by c4cruiser; Aug 28, 2005 at 12:49 PM.
