91 S10 rearend swap

[1971C10Blown]

what rearend are people using in S10 for drag racing? the truck has a 7.5 10bolt, is it strong enough for the strip or will it just rip it self apart? also its not a posi and would like to make it one.

[Warrens69GMC]

You can eithor grab a S10 8.5 10-bolt, or grab a ford 9 inch rearend.

[1971C10Blown]

How can you tell the differance between the two rearends? the 8.5 and the 7.5?

[djracer]

Get a 9 inch if you think you ever want to go fast!

[Warrens69GMC]

http://www.oldspower.com/vb/showthread.php?t=31398

Instead of the two points at the bottom of the Differential, you will have "squared off"
tabs

[1971C10Blown]

how are the ford 8.8 for strength? i found a complete rear end with 4.10 ratio and disks brakes for 1000 is that a good price? and its already sized up for an S-10.

[1971C10Blown]

also i heard that a Nova rear end will bolt right in. Do you guys know what other 10 or 12 bolt cars will bolt into an S-10?

[hotrod 80]

The 8.8 will go in if you narrow the long side 3 inches and run 2 short side axles . I think ( dont quote me ) it comes out like 56 inches and the stocker is 54.5 . You'll need a bigger offset to make it work .

Personally , i would build a 9" . You can buy 33 spline axle and spool package from moser and use a stock case if your on a budget , but i suggest going 35 spline as the axles are basically the same price .

[djracer]

You can run 35 in a stock case you just have to have the right spool. Mark William was the only one that would work 20 years ago but i'm sure there are others now.

[gofastbobby]

Originally Posted by 1971C10Blown

how are the ford 8.8 for strength? i found a complete rear end with 4.10 ratio and disks brakes for 1000 is that a good price? and its already sized up for an S-10.

stock explorers came with that setup. you should be able to find them for around $400 from a boneyard. if i remember right it's a 31 spline axle and can also have the factory trak-lok (posi) to boot.

BTW, thats a hot setup for the rear end in Jeep Wranglers, so if you know any jeep guys they might be able to help you find one.

[stich626]

go to the junk yard with a measuring tape, after you've measured the s-10 spring mounts..
fyi.. exployer and rangers that have 8.8 rear ends , fall in. and the 8.8 is as strong as a 12 bolt (almost a copy really)

[C-10 simplex]

Originally Posted by 1971C10Blown

also i heard that a Nova rear end will bolt right in. Do you guys know what other 10 or 12 bolt cars will bolt into an S-10?

If you can't find a 8.5 10 bolt from an S-10 extreme, you could use a 10 or 12 bolt from any car and just reweld the spring perches and then the wheels might stick out a little (or not if depending on wheel offset). i think it's cheaper/easier this way.

How fast are you trying to go?



2) P.S. i think Moser and others offer complete bolt in 12 bolts for the s-10 but that's big money (2K). i think you can get more use out of a 7.5 10 bolt than what is commonly thought.

[djracer]

Two words. Nine inch
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[Magnimike1]

Depends on power level but I suggest the Explorer rear(8.8), c clips though or the venerable 9"

[stich626]

Originally Posted by hotrod 80

The 8.8 will go in if you narrow the long side 3 inches and run 2 short side axles . I think ( dont quote me ) it comes out like 56 inches and the stocker is 54.5 . You'll need a bigger offset to make it work .

Personally , i would build a 9" . You can buy 33 spline axle and spool package from moser and use a stock case if your on a budget , but i suggest going 35 spline as the axles are basically the same price .

not from a 2wd ranger or explorer.
I'd think there wouldn't be any "offset"

[djracer]

For some reason the pinion is way offset in the explorer 8.8's I would not run it the way it comes in a performance application.

[nomrlz]

Originally Posted by djracer

Get a 9 inch if you think you ever want to go fast!

Originally Posted by djracer

Two words. Nine inch
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this ^^^

if you're goin to the trouble to fab in a different rear end. make it worth your trouble

if you can find a direct bolt 8.5 for cheap then that wouldn't be bad if you're just building a moderate performer