Where to go to get 1980 differential & cover?

[Billy S.]

Hello All,

I have a 1980 4 speed which needs a new differential and differential cover (batwing). My differential housing is probably useable as a core, my cover is definately not (someone broke a bolt off in it a loooong time ago) my rear spring has been jury rigged into place. Whose the best to go to to get one off the shelf? I don't want to rebuild my unit because I don't want to tie my friends lift up while I'm waiting and the differential in the car has already been replaced once (dated 1981).

Thanks!

[Joe L.]

Re: Where to go to get 1980 differential & cover?

Hello All,

I have a 1980 4 speed which needs a new differential and differential cover (batwing). My differential housing is probably useable as a core, my cover is definately not (someone broke a bolt off in it a loooong time ago) my rear spring has been jury rigged into place. Whose the best to go to to get one off the shelf? I don't want to rebuild my unit because I don't want to tie my friends lift up while I'm waiting and the differential in the car has already been replaced once (dated 1981).

Thanks!

William------


I'd suggest Ikerds's Corvette in Bedford, IN. Pat Ikerd passed aways some time ago but the business is still being capably run. You can get a completely rebuild differential unit for about $1,000 + core charge. I don't know if they have the covers, or not. However, even if they do not, I'm sure they could tell you where to get one.

https://www.ikerds.com

[David H.]

Re: Where to go to get 1980 differential & cover?

... useable as a core, my cover is definately not (someone broke a bolt off in it a loooong time ago) my rear spring...

William,

Had same problem with broken bolt. If someone has NOT tried to drill it out, etc, then a machine shop can remove bolt and replace threads with helicoil. I believe machine shop had some kind of “electro” vaporizing machine - however they did it, not very expensive.

Dave

[Joe L.]

Re: Where to go to get 1980 differential & cover?

... useable as a core, my cover is definately not (someone broke a bolt off in it a loooong time ago) my rear spring...

William,

Had same problem with broken bolt. If someone has NOT tried to drill it out, etc, then a machine shop can remove bolt and replace threads with helicoil. I believe machine shop had some kind of “electro” vaporizing machine - however they did it not very expensive.

Dave

Dave------


It's called an Electrical Discharge Machine (EDM).

By the way, I believe the reason that these bolts seize is due to dissimilar metal (galvanic) corrosion.

[Bruce C.]

Re: Where to go to get 1980 differential & cover?

Contemporary corvette salvage,Bristol,Pa.

[Edward J.]

Re: Where to go to get 1980 differential & cover?

William, there's a 80 rear diff on Boston Craig's list, out of Automatic, 30 day warranty. been is dry storage foe 30 years.