Adding Posi '68 C20 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

RichardJ · 04-19-2020, 07:50 PM

My '67 3/4 T, 292, 3 spd, Dana had 4.56 gears. I found a late '70s Dodge 3/4 in the wrecking yard with a Dodge Dana with 3.54 gears and posi carrier.

The gears and posi carrier was $50.
New bearings, seals, gaskets and shims was $120.

Axle splines turned out to be the same (lucky). Dodge pinion splines are different and Dodge used smaller U-joints than GM. A rear end shop had a new, bigger yoke for $20.

Prices are from 2005.

My 6 cyl truck runs easily at 75 mph with the 3.54 gears and 285/70R17 tires.

04-19-2020, 07:50 PM	#1
RichardJ Registered User Join Date: Apr 2010 Location: So Cal Posts: 1,470	Re: Adding Posi '68 C20 My '67 3/4 T, 292, 3 spd, Dana had 4.56 gears. I found a late '70s Dodge 3/4 in the wrecking yard with a Dodge Dana with 3.54 gears and posi carrier. The gears and posi carrier was $50. New bearings, seals, gaskets and shims was $120. Axle splines turned out to be the same (lucky). Dodge pinion splines are different and Dodge used smaller U-joints than GM. A rear end shop had a new, bigger yoke for $20. Prices are from 2005. My 6 cyl truck runs easily at 75 mph with the 3.54 gears and 285/70R17 tires. __________________ '67 GMC 2500, 292, 4spd, AC



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