Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Might buy a 1987 Chevy S10 2.5L 4cyl 4spd manual

dwtaylorpdx · 10-24-2009, 12:49 AM

A later 5 spd is a direct replacement for the 4spd,
GM went cheap on the carb 4cyl S10 it was a fleet rig in their plan.

It would be interesting to do a actual axle gear swap if you could find one of the 4x4 5 spds and put it in the truck, the 4x4 had a lower 1st gear in most of them... SO you can get it moving with a higher axle gear.

Oh and here is a tidbit after some googling...
Axle Gearing codes from the S10 forum!

G80 = LIMITED SLIP DIFF
2.73 = GU2
3.08 = GU4
3.42 = GU6
3.73 = GT4, GQ1
4.10 = GT5

Dave

10-24-2009, 12:49 AM	#15 (permalink)
dwtaylorpdx EcoModding Apprentice Join Date: Oct 2009 Location: Portland OR Posts: 204 Thanks: 1 Thanked 30 Times in 21 Posts	A later 5 spd is a direct replacement for the 4spd, GM went cheap on the carb 4cyl S10 it was a fleet rig in their plan. It would be interesting to do a actual axle gear swap if you could find one of the 4x4 5 spds and put it in the truck, the 4x4 had a lower 1st gear in most of them... SO you can get it moving with a higher axle gear. Oh and here is a tidbit after some googling... Axle Gearing codes from the S10 forum! G80 = LIMITED SLIP DIFF 2.73 = GU2 3.08 = GU4 3.42 = GU6 3.73 = GT4, GQ1 4.10 = GT5 Dave __________________ If it has a motor its worth playing with.......