emptnest

The car is 1993 Corvette with stock LT1 engine. I need to replace the harmonic balancer and hub (to which it mates). I am trying to acquire the necessary replacement parts before removing the original ones from the car.

I already have a new Dorman (594-107) harmonic balancer (aka: Crank pulley). It appears to be a true replica of the stock GM #10128489.

But, I am having trouble finding the hub, GM # 12553250.

All usual parts suppliers show the hub as discontinued.

I tried a supposedly compatible replacement hub from Jegs (#51607), but it would not bolt up to the Dorman balancer.

Does anyone have experience to confirm whether the Dorman balancer is a true compatible replacement for stock?

Making the assumption that the Dorman balancer is correct, I still need a stock hub (GM 12553250).

Any help will be appreciated.

THE 383 admiral

I have a 94 LT1 and the Jegs excellent quality Hub!! fits flawless on the OE balancer. So this would indicate. the problem is with the doorman> balancer <

emptnest

Does yours look like this?

mtwoolford

so what's wrong with your original hub? The only advantage to that aftermarket hub is that it has a keyway cut into it.

The only thing that may be wrong with your original hub is that overtime the seal may have worn a groove into it, which makes replacement of the seal problematic if there is any oil leak issues. The original hub can be repaired inexpensively with a sleeve hub repair kit, This can actually be preferable since the repair sleeve is stainless steel which is less prone to wear than sealing surface of the original cast iron hub.

THE 383 admiral

100% same Jegs Hub. I did drill a hole in the OE balancer. to allow the roll pin to pass through.