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12-10-2013, 04:20 PM | #1 |
Registered User
Join Date: Sep 2013
Location: Nashville, tn
Posts: 163
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s10 swap bigger rear
Hi
Doing a 51 s10 swap and everyone recommends the s10 4x4 rear. But putting in a 350 motor...is that sufficient to handle the power? What other sort of rears have been put into these swaps? Sure appreciate some info. thanks kevin |
12-10-2013, 04:54 PM | #2 |
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Join Date: Jan 2012
Location: el campo texas
Posts: 322
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Re: s10 swap bigger rear
are you going to seriously drag race it. ive run a few s10 /400sb trucks with stock rearend running low 12s street strip. as long as you don't hit the tires hard. youll be allright. if you build it to hook up hard you probably will shell out that rearend
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12-10-2013, 05:26 PM | #3 |
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Join Date: Apr 2009
Location: Waynesfield Ohio
Posts: 1,991
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Re: s10 swap bigger rear
The reason everyone recommends the 4x4 S10 axle is because of its width. You could just as easily use a GM 12 bolt from a full size car.
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12-10-2013, 09:59 PM | #4 |
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Join Date: Feb 2011
Location: moneta va
Posts: 47
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Re: s10 swap bigger rear
iv'e seen info that claimed the s10 rear is good to 400hp but i don't know how true that is.
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12-10-2013, 10:11 PM | #5 |
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Join Date: Sep 2009
Location: Monroe,Iowa
Posts: 4,370
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Re: s10 swap bigger rear
I'm running a S10 rearend behind my 5.3 in my S10. 325+ hp. and my only problem is hooking up. I break loose with 275's real easy. Believe me if it wouldn't hold up I would know by now. I drive it like I stole it!!!! I've had my truck running over a year with this combo.
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12-11-2013, 02:11 AM | #6 |
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Join Date: Mar 2012
Location: Lakes Region NH
Posts: 3,200
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Re: s10 swap bigger rear
The axle bearings are smaller diameter and can wear through the axle given enough load and time. The differential isn't as strong as the larger 8.5" or 12 bolt designs and can let go when torque is applied in a high load / high traction situation.
I ran a 7.5" behind a 455 Buick for many years in a 2800 lb car and it didn't fail until the axle bearings wore at 220k miles. I had 2.28:1 rear gears and I never did burn outs. I changed a 3.23 rear in a Blazer I'd bought that was well cared for but towed frequently. By 110k miles the bearings were junk. The same rear was used in Camaros and Firebirds and I've had to replace plenty of those over the years because they just don't hold up when abused, and many of those cars make far below 325 hp. Some guys get away with it for a long time but my experience makes me want to run something else. |
12-11-2013, 07:02 AM | #7 |
Old Heap Driver
Join Date: Mar 2008
Location: Newport News, Va
Posts: 2,642
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Re: s10 swap bigger rear
I have a 2000 S-10 (3:08) in my 50 with a stock 307, TH-350 combo, and billet spacers to get the track width need.
My 87 S-10 had a stock 3:73 rear and a 383 under the hood, no issues what so ever.
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_____________________________ Bryan '99 Silverado 1500, 4.3, 5-speed, reg cab, short bed '50 Chevy 2DR Hard Top, 350/350, M2 Front End, 3:08 gear, cruiser. '40 F**d Sedan, all Chevy power, Heidt's front end, TCI rear, nice driver. |
12-12-2013, 06:25 PM | #8 |
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Join Date: Nov 2013
Location: Los Angeles
Posts: 236
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Re: s10 swap bigger rear
I've been wondering what other options are out there as well-not so much due to torque, but width. It looks like even with the S10 4x4 axle, you need spacers. Eventually I'd like to get Torque Thrust or similar wheels, which only seem to come with a 3-4" backspace, which negates the spacer. I do not want to cut my bed sides to fit the wheels/tires so I'd like to find an axle that is +/- 2-3" wider than the 4x4 axle. Any other thoughts?
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12-12-2013, 10:58 PM | #9 |
Registered User
Join Date: May 2012
Location: Bluford,Il
Posts: 20
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Re: s10 swap bigger rear
I used an 8.8 from a lincoln town car . with the offset of my wheels they fit just fine
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12-13-2013, 07:35 PM | #10 |
Registered User
Join Date: Mar 2008
Location: Waukee, Iowa
Posts: 1,608
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Re: s10 swap bigger rear
ZR2 s10 is 3" wider than the normal 4wd s10.
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build threads: 86 Suburban 88 Jeep 6.0 swap 49 Chevy truck 54 Chevy wagon 86 Suburban lowered 4/6 54 Chevy wagon 49 Chevy/s10 mix 88 Jeep Wrangler rockcrawler |
12-13-2013, 08:05 PM | #11 |
Hollister Road Co.
Join Date: Apr 2005
Location: Houston
Posts: 6,131
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Re: s10 swap bigger rear
My ZR2 4x4 is 63" the non ZR2 4x4 is 59", The truck 2WD is 54".
If you get a ZR2 from 1999 - 2000 up its an 8.6 with disc brakes. I don't know how well an early S10 7.5 would hold up but the 8.6 is a good rear. My understanding is that the 8.5 is drum and 8.6 is disc. I don't know about the 7.5 |
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