[smallblocked_S-10]

i have a 91' s-10 with a 350 combo with the stock rear end, it has 4.10's i believe. The rear end holds up fine for now but i am planning on either building a 383 or 406 and i dont think it will hold up. Does anybody know what rear end will fit with doing the least amount of work? And if so what kinda of vehicles do these rear ends come out of? so i can look.
thanks
rich

[Halloweenking]

I could be wrong, but to my knowlege, a stock s-10 does not have a rear that hairy, but if it does, your fine, 4:11's will hold up to the big dogs, it is a good rear for racing as well. If your rear stock, I seriously don't think its 4:11's. I have no memory of anything, but I never heard of a 4:10 rear, I could be mistaken though.

[oldcarguy85]

stock s-10 didn't have 4:11 , i think u could only go as high as 3.73 or 3.90 stock.... that rear will never hod lthat much power (at least not for long) get a ford 9" or a chevy 12 bolt, and get it shrotened.... u really can;t find anythign thats the right width i don't think...........

[Tom]

I have a set of 410s that will fit that rear and will part with them

[Old Crow]

Chevy data shows 4.10 gears avaiable for the 2.5 engine.Most S10's are bought from dealers stock, not too many equipped with optional gear ratios.Seen V-8 conversions using 12 bolt axles. Must be custom narrowed axles, I think even a Camaro axle is too wide.

[10 Spot]

I can tell you from experience that the stock S-10 rear end will not hold up to a 383. I have a 95 with and 383 in it sitting in the garage with a broke axle. I am going the 9" ford route with mine. I have called a few places to get a bolt in 9" and they run from $2400 to $3100 from Currie, Moser, and Strange. My motor is pushing between 550 and 600 horse, I was suprised it lasted long as it did though.

[1931 steve]

I will either run a rear end out of a Chevy Caprice cop car that is already C-Clip eliminated, just need the tubes cut shorter and axles cut to proper length, or I may use a Posi Unit for a Chevy Camaro with a set of 3.73 or 3.90, Using my stock housing, May have to upgrade to better axles. Also depends on what tire side your using!!!

Steve

[Triaged]

Check out my swap here
http://forums.s-series.org/viewtopic...ghlight=10bolt

That one of the easiest swaps out there.

Another option is a 8.8" axle from a explorer. It will be 2" too wide (1" each side) and have the wrong bolt pattern but other then that is a bolt in.

[S10xGN]

Originally Posted by Triaged

Another option is a 8.8" axle from a explorer. It will be 2" too wide (1" each side) and have the wrong bolt pattern but other then that is a bolt in.

BINGO! I used a Ranger 8.8" (which in retrospect was harder than the Explorer), narrowed the long side 2" and used 2 short side axles. I'm running 15" x 10" rims with 5" backspacing under Hoosier 325-50 x 15 DOT Quicktimes. They are tight, but no clearance issues at ride height and they fit under the fenders without sticking out.

[M&M CUSTOM]

WHOA, we have a very old thread that has arisen from the depths, and yet still has value.

I have included a link in my Axle Information sticky post from another of our members here on Hotrodders that includes his short but detailed quest to install a ford 8.8 into his S-10.

[Mighty Mouse S-10]

I haven't had a 700R stay together long enough to trash the rear [373 gears]. But I did pick up a rear out of a ZR2 [373] with 21,000 mi. for $300.00 Factory locker and disc's. I know it's supposed to be better then the one that came with it in 1985, but I don't know how much better. Could be that when I get a good trans and some sticky tires I'll find out. I have a 12 bolt 373 in the yard I could cut down if I have to[I have to stick with the 373's because it's 4x4] but it's nice to know I have other options.

Dave

[smallblocker2]

95-up L-35 opted vortec S10's come with 8.5in ring gears. A good upgrade that's a bolt-in, 99-up have disc's or can be fitted with ZR2 4x4 discs. ZR2 opted diffs are also 8.5in 10 bolts, but are 3.9in wider than 4x4 diffs, which are 4in wider than 2WD diffs. You can tell an S10 8.5in diff by looking at the axle tubes as they taper down in diameter just out of the diff housing. The ZR2 "locker" is a clutch style factory locker called a Gov-lock.

Early Bronco 9in's fit really good.
if you can find one cheap.