1979 -80 differential difference ?
Race Director
Joined: Mar 2003
Posts: 11,608
Likes: 780
From: Eustis ( Area 51 Bat Cave ) Fl
I thought the bat wing style came out in 80 then i was told late 80 then i was told 81, both my 81s had it,
But i believe the cut off is 79, and the 80? up ( with bat wing ) isnt plug and play with eariler vettes that run the same rear dating back to 63,
But i believe the cut off is 79, and the 80? up ( with bat wing ) isnt plug and play with eariler vettes that run the same rear dating back to 63,
Race Director
Joined: Oct 2000
Posts: 12,687
Likes: 3,139
From: Shamong, NJ
The 79 rear used a cast iron case, and a separate crossmember. The posi unit in the 65-79 rear is made by Eaton.
The 80-82 rear has an aluminum case, and the case and crossmember are cast in one piece. The 80-82 rear uses a Dana posi unit.
The 80-82 rear has an aluminum case, and the case and crossmember are cast in one piece. The 80-82 rear uses a Dana posi unit.
Race Director
Joined: Mar 2003
Posts: 11,608
Likes: 780
From: Eustis ( Area 51 Bat Cave ) Fl
I thought it started in 80, but i had a guy pitch a tantrum his 80 had the old iron style
Team Owner
Joined: Jun 2000
Posts: 38,923
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From: Southbound
Cruise-In II Veteran
Race Director
Joined: Mar 2003
Posts: 11,608
Likes: 780
From: Eustis ( Area 51 Bat Cave ) Fl
You know being into vettes as you are there are people who believe their own opinions as indisputable facts and nothing will ever prove them wrong or mistaken.
Pro
Joined: Jun 2016
Posts: 567
Likes: 82
From: Auckland
It is possible to swap the older iron diffs into the 80-82 cars. There are quite a few other parts that need to be changed as well. (half shafts spindle flanges, strut rods, strut rod bracket, drive shaft, Not sure if I've missed anything)
Racer
Joined: Nov 2017
Posts: 319
Likes: 125
From: Midwest
Although there were quite a number of parts designed for the 1980 Corvette that found their way into the last several thousand '79 cars, I've never read any suggestion that the aluminum Dana differential was one of those items.
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