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70 beast · 09-24-2010, 08:38 PM

heres a great gear ratio/ speed calculator.
http://www.grimmjeeper.com/gears.html

i ran 35s on my 70 with 4.56's and now i have 38's on my k5 with 4.56 and i would have to say my k5 does way better rpm wise than my 70 did. one difference between the 2 was the 70 had a th350 and the k5 has a sm465 but the final drive ratios are the same 1:1.

i looked up the difference and your rpm's would be a little higher with 35's as apposed to the 37's you have now.

09-24-2010, 08:38 PM	#7
70 beast Certified Hobbiest Join Date: Jul 2007 Location: Sacramento, Ca Posts: 384	Re: 456 gears with 35s? heres a great gear ratio/ speed calculator. http://www.grimmjeeper.com/gears.html i ran 35s on my 70 with 4.56's and now i have 38's on my k5 with 4.56 and i would have to say my k5 does way better rpm wise than my 70 did. one difference between the 2 was the 70 had a th350 and the k5 has a sm465 but the final drive ratios are the same 1:1. i looked up the difference and your rpm's would be a little higher with 35's as apposed to the 37's you have now. __________________ my jimmy build http://67-72chevytrucks.com/vboard/s...d.php?t=352536 Last edited by 70 beast; 09-24-2010 at 08:38 PM.