Differential tight/problems?
Thread Starter
Intermediate
Joined: Dec 2013
Posts: 38
Likes: 0
Differential tight/problems?
I have a 76 corvette. I have the engine and transmission disconnected. I can barely turn the rear wheels by hand or push the car by myself. I believe that it is my differential that is really tight. Does anybody know why this is happening and if there any solutions? Also is this bad for the car (extra wear/ hurt mpg/ hurt performance)?
Thanks,
Don
Thanks,
Don
Team Owner
Joined: Jul 2004
Posts: 40,448
Likes: 793
From: Redondo Beach, California
Yes, something is not right. On my 70 frame build up, I can easily turn the rear wheels by hand...This causes rotation in the half shafts and the differential and rotation with the drive shaft.
Thread Starter
Intermediate
Joined: Dec 2013
Posts: 38
Likes: 0
Yes I agree something has to be wrong. When I bought the car I was told that the original differential was broken and that he replaced it with a 3:70 differential. Are there any adjustments that can be made on the differential?
Race Director
Joined: Sep 1999
Posts: 11,361
Likes: 383
From: Plano TX
There are plenty of adjustments for the gearset and bearings. But if it was done wrong when the diff was built the parts are ruined. For instance, you can over tighten the pinion nut which will make the pinion bearings bind. If that happened the bearings are toast and need to be replaced.
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