7.5 to 8.8 rear end swap November 20, 2009, 08:05:42 AM I have an 83 tc I swapped out the 7.5 to a 8.8 out of a 93 stang. It went in nice bolted right in the only issue I have is the gearing killed the car my 7.5 had 3.54 and the 8.8 is 3.73 what should i be running to bring this bird back to life? Quote Selected
7.5 to 8.8 rear end swap Reply #1 – November 20, 2009, 09:04:54 AM your original gear would have been a 3.45...Well lesee, you added .28 to your rear ratio, but being the early TC have a 4.03 first gear ratio is now 15.03 vs 13.90 which means it's going to wind up faster in the gears(1st will be most noticeable)... If anything it should seem a little stronger, you sure it doesn't have other issues??? Say cam or iginition is retarded...Any possibility the new rear is a maybe a 2.73 or 3.08??? Stock, a Stang 8.8" never had 3.73s from the factory... Quote Selected
7.5 to 8.8 rear end swap Reply #2 – November 20, 2009, 09:18:20 AM Ya I have the tag on my tool box def 3.73 ...1st winds up the fastest...it was fine till i put the rear end in nows its real doggyyes the org gear was 3.45 typo error!! Quote Selected
7.5 to 8.8 rear end swap Reply #3 – November 20, 2009, 09:35:00 AM If it has a tag that states it's a 3.73, then then I can't see it being a 8.8"... Stock 8.8" Stang rears ranged from 2.73 to 3.27(the 3.27s arn't very common)... The 4cyl had 3.45 & 3.73, 7.5" rears... Only factory 8.8" I know of in a passenger car, was the '87-'88 Turbo Coupes with automatic, 5 speeds got 3.55s those years... Quote Selected
7.5 to 8.8 rear end swap Reply #4 – November 20, 2009, 09:40:16 AM OK I will try to clean it up more to verify it...its pretty rusty I bet its the 2.73 gear...the .73 is clear its before that its really pitted and hard to see thanks Quote Selected
7.5 to 8.8 rear end swap Reply #5 – November 20, 2009, 09:49:18 AM My 5.0 Stang had 2.73s... If that's what you have, 3.55 or 3.73 cogs would be fine... Quote Selected
7.5 to 8.8 rear end swap Reply #6 – November 20, 2009, 10:57:33 AM cool thanks im going to check this weekend Quote Selected
7.5 to 8.8 rear end swap Reply #7 – November 20, 2009, 12:13:06 PM Dont always trust the tag. Jack the car up (install jackstands). And do the old, mark the tire and mark the drive shaft and count the rotations Quote Selected
7.5 to 8.8 rear end swap Reply #8 – November 20, 2009, 12:46:08 PM thats a good idea too. The stang I got it from had a bunch of work done to it b4 he wrecked it Quote Selected
7.5 to 8.8 rear end swap Reply #9 – November 20, 2009, 06:22:09 PM Quote from: jandmmustangs;299510Dont always trust the tag. Jack the car up (install jackstands). And do the old, mark the tire and mark the drive shaft and count the rotationsx2 Quote Selected
Topic: 7.5 to 8.8 rear end swap (Read 2537 times)
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