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chevydog66 · 10-25-2009, 07:49 PM

I have the 200-4r installed in my 72 GMC longbed, with a 355 sbc, .444 lift cam 1.94 int. valves, 600cfm Holley, nothing great, with the 3.07 rear gear and all is well. I bought all the parts needed from Bowtie Overdrives. I have 20" wheels, probably about 23" tire height. 65 mph is about 1900rpm. Good enough for me. I don't know what kind of mpg I am getting though.

10-25-2009, 07:49 PM	#25
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	Re: 2004R trans with 3.08 axle I have the 200-4r installed in my 72 GMC longbed, with a 355 sbc, .444 lift cam 1.94 int. valves, 600cfm Holley, nothing great, with the 3.07 rear gear and all is well. I bought all the parts needed from Bowtie Overdrives. I have 20" wheels, probably about 23" tire height. 65 mph is about 1900rpm. Good enough for me. I don't know what kind of mpg I am getting though. __________________ 2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up Last edited by chevydog66; 10-25-2009 at 07:50 PM.