S10 Rear end Ring Gear and Axle Sizes: 1983 to 1992 7.5" ring gear 26 spline axles Available from 1988+ 7.625" ring gear 28 spline axles Available from 1995 and up, 8.5" ring gear 30 spline axles, standard for 98+ ZR2's with rear discs These are some of the axle RPO codes and should be the same for all GMs with either of these axles. GU4=3.08 ... Big Brake Parts or Kits for S10 needed Jump to Latest 20K views 25 replies 14 participants last post by nfamus10 bk2life Discussion starter Overall, my 4.3L Vortec S10 is great and is sitting at around 143,000 miles.

Context Explanation

Unfortunately, over the past couple months it's started to form a rather rough idle accompanied by a "jerky" or "bucking" feeling when accelerating, especially uphill. I've searched many forums over the past couple of hours and have found nothing definitive. I'm trying to find accurate measurements of S10 axles, not "I think it's about xx inches wide." I need to know 2WD, 4WD and ZR2 widths from WMS to WMS. A guy has an 8.5 (or 8.625) with G80 from his ZR2...

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S10forum is the community to discuss the S-Series, Chevrolet Colorado and GMC Canyon. Join to discuss rebuilds, modifications, tech articles and more! i wanna put 20's on my s10 (2000 X w/ belltech 2/3drop) and was wondering if i could just put the rims on with no problems with a 4.75 bs with 245/35/20 tires. I don't know too much about this so any helpful info would be appreciated. This post is a compilation of parts, suggestions, tips, and practices to successfully swap an LS-based engine into an S10 Truck (2WD and Blazer variants) Most swappers generally underestimate the total costs and time for these conversions.

Final Conclusion

Keep the engine bay clean. Once the original engine is...