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Username Post: S10 rearend ring & pinion swap        (Topic#351085)
Whitie 
Poster
Posts: 6

Reg: 05-12-18
05-12-18 05:59 PM - Post#2733821    

Hey guys. Need some help. Have a medium built 350 with a turbo 350 trans and a 3.73 ratio S10 rear end. Want to lower rpms. What ratio would provide a good highway gear and does Camaro gears fit S10. Don't want to change out the whole rear end, just ring & pinion.

Thanks for any help.



 




SleeperSS 
Senior Member
Posts: 2597

Loc: Spanaway, Wa
Reg: 10-17-04
05-12-18 09:26 PM - Post#2733832    
    In response to Whitie

It's a little late now, but a 700R4 would have been the best bet. Buy the time you buy the gears plus your time, it may be better to get another rear end with the ratio you want. Get a 98+Blazer 2wd rear end and you get disc brakes.

U.S.C.G. "So others may live"

'96 S-10 SS
'02 BlaZeR2





 
Whitie 
Poster
Posts: 6

Reg: 05-12-18
05-13-18 08:11 AM - Post#2733855    
    In response to SleeperSS

Thanks. I had already bought 700R4 but trans is 4" longer than the 350 overall and the trans won't fit my hot rod build. Changing the entire rear end is a radical move because of the way the spring hangers and radius rod mountings are welded to the axle. Going to have to be a ring & pinion change.



 
Whitie 
Poster
Posts: 6

Reg: 05-12-18
05-13-18 08:20 AM - Post#2733857    
    In response to Whitie

Forgot to ask. I have access to a 92 Chevy Camaro 7.65 ring & pinion. Will it fit my S10 rear end?



 
SleeperSS 
Senior Member
Posts: 2597

Loc: Spanaway, Wa
Reg: 10-17-04
05-13-18 09:56 AM - Post#2733866    
    In response to Whitie

Depends on which rear end you have. If it's the 8.5 or 8.6...no. check the tubes about 3" from the center chunk. If the tubes narrow slightly, you have the more desirable rear end.

U.S.C.G. "So others may live"

'96 S-10 SS
'02 BlaZeR2





 
gchemist 
Senior Chevytalk Moderator
Posts: 24807
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
05-13-18 11:27 AM - Post#2733872    
    In response to SleeperSS

Stock 3.42 gears are good for a light vehicle. My '95 has a semi rare 3.08 gears. Only 3000+ had them out of 90,000 built that year. It's a little gutless for pulling. For power, I drive it without OD. It's nice to do 80 MPH on the toll and barely hitting 2,000 RPMs. At 85 MPH, those gears are moving!! My 96 with a better than stock 700R4 and external cooler, pulled a 1200 lb pop up camper at 70 MPH without any problems. The '96 had a lot of mods. Ram air, 17" wheels, reprogrammed PCM, shift timing reduced, increased trans line pressure, updated MPFI spider, and high flow cat and 14" Magnaflow.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


Edited by gchemist on 05-13-18 11:27 AM. Reason for edit: No reason given.

 
Whitie 
Poster
Posts: 6

Reg: 05-12-18
05-15-18 01:38 PM - Post#2734042    
    In response to gchemist

Thanks for all the reply's.



 
toro455 
"4th Year" Silver Supporting Member
Posts: 546
toro455
Loc: Western NY
Reg: 06-15-02
06-30-18 05:17 AM - Post#2738572    
    In response to Whitie

Whitie,
The carrier from the 4th gen Camaro/Firebird will fit the "smaller" rear used in the S10 (7.5"??) at least in 2001. Remember when SLP was converting some of the F-Body 4th Gen cars? SLP was removing the TrueTrac rears! I put one in my 2.2L 2001 Sonoma. That 2001 had the "smaller" rear which can be identified by looking at the bottom of the center section casting. The smaller one has almost pointed protrusions like vampire teeth. The larger 8.5 or 8 5/8 has wider plateau/flat top protrusions. The Camaro carrier will fit the smaller (including same axle splines) but not the larger 8.5/ 8 5/8". I still have a 2003 Sonoma which I ordered new with the 5spd and 4.3L which forced the heavy duty larger rear. I also installed a TrueTrac in that one but I needed to order it because the 4th gen F-Body carrier did not work on the larger rear.

For the smaller rear a lot of the 4cyl S10's had 4.10 rear gears. If you have 4.10's you need either the split slider block or you need to use a die grinder to custom fit the full slider block else you won't be able to slip it in place. I custom ground the slider block for my 2001 lease vehicle and then later removed and re-installed the factory carrier. It doesn't take much custom fitting but I did it in several steps trying it after each one to remove the minimum material. The "slider block" is what the TrueTrac uses between the axle ends to keep the c-clips in place at least that vintage of TrueTrac.

Good luck,
Scott



Edited by toro455 on 06-30-18 05:20 AM. Reason for edit: No reason given.

 




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