stock rear diff 1,000?
- Thread starter jpalmer
- Start date
autoaddictions
Active member
Re: stock rear diff 1,000?
Ill give you some good info. Find a late 90s Impala ss or Caprice. They have a 8.5 rear. All you have to do is weld the leaf pads on, swap out the gears for 3.42 and grind of the old bullshit and use corvette wheels and your set. The rear is 2" wider than our 7.5 stocker however all the corvette Z06 wheels require a 1"spacer one the stock rear to fit properly. If you have the impala rear no spacers and your money!! The axles will have to be swapped out for our 5x 4.5 bolt pattern. Impalas are 5x100mm. All the parts are available from summit of jegs. Leaf pads and axles U bolts ect. Even has rear disc breaks.
Ill give you some good info. Find a late 90s Impala ss or Caprice. They have a 8.5 rear. All you have to do is weld the leaf pads on, swap out the gears for 3.42 and grind of the old bullshit and use corvette wheels and your set. The rear is 2" wider than our 7.5 stocker however all the corvette Z06 wheels require a 1"spacer one the stock rear to fit properly. If you have the impala rear no spacers and your money!! The axles will have to be swapped out for our 5x 4.5 bolt pattern. Impalas are 5x100mm. All the parts are available from summit of jegs. Leaf pads and axles U bolts ect. Even has rear disc breaks.
RealFastV6
@jb_and_his_coffee
I just posted one of those rears for sale. It's def a cool concept and way to go, and changes your wheel options too.
It'd be about a third the price of a ford 9" rear, especially if you can do the welding.
It'd be about a third the price of a ford 9" rear, especially if you can do the welding.
Re: stock rear diff 1,000?
I am looking to find a 3.42 8.5 drop in . By the time u buy a used rear, change gears, axles whatever u r going to spend some coin.
I am looking to find a 3.42 8.5 drop in . By the time u buy a used rear, change gears, axles whatever u r going to spend some coin.
fivetodrive
CRISPY
Re: stock rear diff 1,000?
I have one, but freight shipping always kills the deal. That is why I posted the info on the 2wd with the 4x4 rotors it may also need axles but that's lots easier than finding a 4x4 5 speed non zr2 housing!
I have one, but freight shipping always kills the deal. That is why I posted the info on the 2wd with the 4x4 rotors it may also need axles but that's lots easier than finding a 4x4 5 speed non zr2 housing!
Re: stock rear diff 1,000?
Also, another good option. Possibly. I'd prefer a lack of spacer, but if it saves money...
Also, another good option. Possibly. I'd prefer a lack of spacer, but if it saves money...
Re: stock rear diff 1,000?
Wouldn't that be a 94-96 Impala SS or Caprice rather than a late 90's? If so, what about the Buick roadmaster wagon. Joe Keller has one. You could steal his.
Wouldn't that be a 94-96 Impala SS or Caprice rather than a late 90's? If so, what about the Buick roadmaster wagon. Joe Keller has one. You could steal his.
bigmileage
Member
Re: stock rear diff 1,000?
All ZR2 rear diffs are 8.5 (94-up) and roughly 3" wider. They will bolt right in, the stock driveshaft will also work. All 2wd trucks, including the Xtreme, are only 7.625s.
Disc brakes are 98-up ZR2 only, the 94-97 did not have them. The rear diffs are also different, so swapping over disc brakes requires a spacer on a 94-97 diff, the axle tubes are actually longer on a disc brake rear.
All ZR2 rear diffs are 8.5 (94-up) and roughly 3" wider. They will bolt right in, the stock driveshaft will also work. All 2wd trucks, including the Xtreme, are only 7.625s.
Disc brakes are 98-up ZR2 only, the 94-97 did not have them. The rear diffs are also different, so swapping over disc brakes requires a spacer on a 94-97 diff, the axle tubes are actually longer on a disc brake rear.
Captain Morgan
Moderated User
Re: stock rear diff 1,000?
not entirely correct. the 8.5 is only found in 94-99.5 ZR2's. The 99.5-up ZR2's are 8.625 axles.
not entirely correct. the 8.5 is only found in 94-99.5 ZR2's. The 99.5-up ZR2's are 8.625 axles.
autoaddictions
Active member
Captain Morgan
Moderated User
Re: stock rear diff 1,000?
be careful when dealing with the B-body axles, at least as far as width goes. They may all be 8.5's, but when I was researching them before I bought one for my '52 Cadillac, there were at least 3 different widths used on those cars. I think the wagons had a width all to their own, then there were two different widths or styles for the sedans.
be careful when dealing with the B-body axles, at least as far as width goes. They may all be 8.5's, but when I was researching them before I bought one for my '52 Cadillac, there were at least 3 different widths used on those cars. I think the wagons had a width all to their own, then there were two different widths or styles for the sedans.
autoaddictions
Active member
Re: stock rear diff 1,000?
Interesting idea. However for a 9 sec or 8 sec build. You would be way out of gears on a 3.73. I think a 3.08 be better. I'm almost out with a 3.42. I have to take her to 6500 in 3rd to make it to 135mph.
Interesting idea. However for a 9 sec or 8 sec build. You would be way out of gears on a 3.73. I think a 3.08 be better. I'm almost out with a 3.42. I have to take her to 6500 in 3rd to make it to 135mph.
ed hess
race or get outta the way
Re: stock rear diff 1,000?
So what you are saying is the setup in this pic is not what your looking to do. lol
So what you are saying is the setup in this pic is not what your looking to do. lol
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