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10-23-2018, 09:07 AM | #11 |
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Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,714
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Re: 1971 GMC C2500 rear end questions
My 70 GMC big block truck had the 3.54 geared Dana 60 and I ran 265 75 16 tires and it was pretty good combo for the road.
Expect to pay $250 for a set of gears, another $150 for bearings, and $400 at least for labor to set up a diff. Figure anywhere from $500-$900 depending on what you want for a traction device. Obviously, you can save money buying used if you can find the right combo in the time frame you need. Most likely a later model semi-float 14 bolt will have a Gov-Lock limited slip installed. While not my first choice, I am still running it in both the swaps I’ve done. And the 9.5” version appears to be much more robust than the 8.5” “Gov-Bomb”. Depending on your abilities, the later axle can be done fairly inexpensively.
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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