Thread: Another 700R4 Question
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11-13-2008 05:22 PM #11
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My memories are calibrated on a '47 Ford three speed with a 3.78 rear and a 3.114 low gear for a total ratio of 11.77. It was pretty "sudden" in low gear with just the 239 c.i. 59AB flathead but of course the second gear was too high at 1.773 which is why some folks used the Zephyer gears for a better split between first and third. As I calculate it I am using a 3.55 rear with the 700R4 3.07 first gear to give an overall first gear ratio of 10.89, so it should still be pretty sudden in first gear with a SBC 350 but I hope the mpg is reasonable with the OD gear. If/when I get the wiring finished I will find out if it hooks up or just spins the rear wheels in low gear.
Don Shillady
Retired Scientist/teen rodderLast edited by Don Shillady; 11-21-2009 at 05:36 PM.
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