Gearing help sought - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Ole Greenie · 01-27-2011, 09:34 PM

I am looking to soon replace the 3.08 rear gear in my 70 CST short/step and am looking for loaner trucks for the swap. I would like to go to a 3.42 or 3.73 posi. What years and models should I be looking for if I have a 5 lug with coil springs and a panhard bar? Also which newer models would work...drum or disc but I would like to go to a disc set-up if I could with minimal alteration.

I have noticed alot of 4WD vehicles also have open diffs. so I am thinking that this search may be a long one. Thanks for any help you all could lend.

By the way, Ole Greenie is going into the paint shop Monday. Should take two weeks to complete.

01-27-2011, 09:34 PM	#1
Ole Greenie Registered User Join Date: Apr 2010 Location: Hagerstown, MD Posts: 246	Gearing help sought I am looking to soon replace the 3.08 rear gear in my 70 CST short/step and am looking for loaner trucks for the swap. I would like to go to a 3.42 or 3.73 posi. What years and models should I be looking for if I have a 5 lug with coil springs and a panhard bar? Also which newer models would work...drum or disc but I would like to go to a disc set-up if I could with minimal alteration. I have noticed alot of 4WD vehicles also have open diffs. so I am thinking that this search may be a long one. Thanks for any help you all could lend. By the way, Ole Greenie is going into the paint shop Monday. Should take two weeks to complete. __________________ John Paap Ole Greenie Hagerstown, MD My Mistress 70 CST Short/Step LS 5.3/4L65E New motor install Thread:http://67-72chevytrucks.com/vboard/s...d.php?t=667773 Last edited by Ole Greenie; 01-27-2011 at 09:36 PM. Reason: add-on



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