Rear end question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dano4163 · 01-13-2016, 02:31 PM

I'm in the process of building a 1969 GMC c1500 1/2 ton. According to the paperwork that came with it the rear end is a 3.07 ratio. I would like to upgrade this to a 3.73 or maybe a 4.11 and also make it positive traction. I haven't tore it apart yet but I have been looking at parts. The question is would the ring gear be an 8 7/8 an also which would be the better ratio to use? I plan on using the truck as a cruiser and for shows mostly.

01-13-2016, 02:31 PM	#1
Dano4163 Registered User Join Date: Jun 2015 Location: Wayne, Ohio Posts: 12	Rear end question I'm in the process of building a 1969 GMC c1500 1/2 ton. According to the paperwork that came with it the rear end is a 3.07 ratio. I would like to upgrade this to a 3.73 or maybe a 4.11 and also make it positive traction. I haven't tore it apart yet but I have been looking at parts. The question is would the ring gear be an 8 7/8 an also which would be the better ratio to use? I plan on using the truck as a cruiser and for shows mostly.



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