I'm building my 56 with a 350 and a Saganaw 4-speed (4th gear is 1:1) and a 2.73 TransAm Posi Rear. I calculated I'd be running about 61 mph at 2000 rpm with a 28" tall tire. Using the same tire you will be turning 2700 to run 61 mph.

I hope to get about 25 mpg Hiway...

Check it out here. The trans gear is one (1) for 1:1 (direct drive).

http://www.wallaceracing.com/gear-speed.php

Welcome to the Stovebolt!

Mike B smile

Last edited by Mike B; 03/27/2012 5:00 AM.
Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
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Silver Spring, MD