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Rear Gears ('89 vette)

Hawk196

Member
Joined
Feb 2, 2015
Messages
7
Location
New Jersey
Corvette
1989 Triple black Convertible
While I try to figure out the engine work and the car is at the mechanics, I was thinking I'll start work on something I'm going to change, the rear gears.

It is an automatic with a 2800 stall converter, I'm not sure of the stock gears, but I don't want to do a drastic/problematic jump (not sure 3.54 or 3.73). Can I get a good ratio recommendations and a place to buy them? I'd like to order them tonight.

TIA
 
Depends on your intake you have. If your staying with stock TPI go with 3:54. If you have a miniram or super ram go 3:75


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As I recall the stock '89 automatic gears were 2:59. I upgraded mine years ago to 3:07 (stock TPI with headers). You will also need to change the speedometer gear especially with the higher gear ratios you are considering. My gas mileage went down 3-4 mpg.
 

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