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speedometer off

O

oleanclasscars

Guest
We have a 1989 Corvette that the gear was changed in the rear end. The original gear set was 355, the new gear set is 256. Now the speedometer is off. I have heard a few different solutions to my problem. One is a new Prom for the ECM. Another is either a brac module or a drab module. I have not been able to find any of these things anywhere. It is an digital speedometer. Can anyone help me?
 

JT ZR-Won

Well-known member
Joined
Dec 6, 2000
Messages
1,291
Location
Bradenton, FL
Corvette
'90 ZR-1 #3010
When I had the gear changed in my '85, I ordered speedometer recalibration gears also. I got them from Summit Racing. They are 2 nylon gears. They'll ask you which gear you have to make sure you're getting the right one. I know one of the gears goes in the trans if it's an automatic.

Jay
 

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