7.5 rear end question
7.5 rear end question Quick question guys how much can a 94 F body 7.5 rear end take? I haven't heard to much about the abuse it can take. I plan on going with 4.10, and I have a T-56 also. Street and strip car.
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
This thread will give you an excellent idea of average (and extreme) potential life expectancy for the 7.5" exposed to the rigors of drag racing:
https://ls1tech.com/forums/gears-axl...ock-7-5-a.html
In summary, life expectancy is good for the A4 cars and bad for the M6s.
https://ls1tech.com/forums/gears-axl...ock-7-5-a.html
In summary, life expectancy is good for the A4 cars and bad for the M6s.
Stock hp cars have broken these rears with manual transmissions, banging gears out on the street. You just never know when your turn is up. Bob
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12 Second Club
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From: Bucks County, Pa.
Although many will come on here and say they grenaded theirs on old, hard, 500 tread wear all seasons, on the cold street in winter, granny shifting 
it IS somewhat dependent on just how sticky a rear tire you are running with that T56. 
it IS somewhat dependent on just how sticky a rear tire you are running with that T56. Trending Topics
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Verdad Gallardo Well surprisingly I found a guy selling 3 8.8 rears for 100 dollars they are all drum. What kits do they sell, and or what is the fab I have to do to make one work in a f body. I still want my disc brakes.
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From: Turnin' Wrenches Infractions: 005
7.5s handle a lot more when they have fresh gears and bearings. Ive put a ton behind m6 cars and they live long lives. With stock gears, used/damaged bearings, and stock tolerances they dont hold up great however. Notice I said damaged, ive never repeat never pulled a stock m6 rear apart that did not have driver side carrier bearing damage, even ones that were still being driven. They are always torn up, surely contributing to its eventual demise.
TECH Apprentice
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There are no bolt in 12 bolts from other cars, you have to either buy new from the aftermarket minimum around 2100, or go with a fabricated 8.8+10 bolt hybrid which if you have the fabrication skills can be had for less than a 1000, or rebuild your 10 bolt and hope for the best. If your lucky, you can find a rear in the parts classified.
Teching In
Joined: Nov 2015
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There are no bolt in 12 bolts from other cars, you have to either buy new from the aftermarket minimum around 2100, or go with a fabricated 8.8+10 bolt hybrid which if you have the fabrication skills can be had for less than a 1000, or rebuild your 10 bolt and hope for the best. If your lucky, you can find a rear in the parts classified.
Teching In
Joined: Feb 2015
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From: Roseland, NJ 07068
10 Bolt Life I think the more you add on under the hood, the more pressing is the issue of what is holding all that power on the other end. My 2002 SS has a Dyno reading at the rear wheels of 390 & change.(6 speed). I don't launch it or speed shift but I am now in the process of installing a new rear axle & pinion set up because I don't trust it to take on the extra torque indefinitely. I also run
295/35 ZR18's on the rear. Most of my fun time is from a rolling start because I am not looking for a towed ride home. Peace of mind is worth it. You know,"if you're going to dance you have to, sooner or later, pay the band".
295/35 ZR18's on the rear. Most of my fun time is from a rolling start because I am not looking for a towed ride home. Peace of mind is worth it. You know,"if you're going to dance you have to, sooner or later, pay the band".
Teching In
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I think the more you add on under the hood, the more pressing is the issue of what is holding all that power on the other end. My 2002 SS has a Dyno reading at the rear wheels of 390 & change.(6 speed). I don't launch it or speed shift but I am now in the process of installing a new rear axle & pinion set up because I don't trust it to take on the extra torque indefinitely. I also run
295/35 ZR18's on the rear. Most of my fun time is from a rolling start because I am not looking for a towed ride home. Peace of mind is worth it. You know,"if you're going to dance you have to, sooner or later, pay the band".
295/35 ZR18's on the rear. Most of my fun time is from a rolling start because I am not looking for a towed ride home. Peace of mind is worth it. You know,"if you're going to dance you have to, sooner or later, pay the band".
I'm stuck at a cross roads 
I was planning on putting all new suspension UMI front to rear and coil overs $3200 this spring. Now I need to buy the rear first. Very expensive hobby. But I can see it now a full bolt on 355 with a procharger I'm distain to fail . The rear end that is LOL... Hopefully I can find a rear while I granny foot this thing all spring.
I was planning on putting all new suspension UMI front to rear and coil overs $3200 this spring. Now I need to buy the rear first. Very expensive hobby. But I can see it now a full bolt on 355 with a procharger I'm distain to fail . The rear end that is LOL... Hopefully I can find a rear while I granny foot this thing all spring. Teching In
Joined: Nov 2015
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I'm stuck at a cross roads I was planning on putting all new suspension UMI front to rear and coil overs $3200 this spring. Now I need to buy the rear first. Very expensive hobby. But I can see it now a full bolt on 355 with a procharger I'm distain to fail . The rear end that is LOL... Hopefully I can find a rear while I granny foot this thing all spring.
I was planning on putting all new suspension UMI front to rear and coil overs $3200 this spring. Now I need to buy the rear first. Very expensive hobby. But I can see it now a full bolt on 355 with a procharger I'm distain to fail . The rear end that is LOL... Hopefully I can find a rear while I granny foot this thing all spring.
The stock rear is really hit or miss IMO. In my case I'm surprised mine is holding together lol. I have a M6 with 4.10 gears, around 600 rwhp and 700 rwtq, and drag radials. Of course a lot of it has to do with how you drive
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317