Thread: 1938 85 1.5 ton gearing
View Single Post
Old 06-15-2021, 02:30 PM   #11
Supertuner700
Member
 
Join Date: Apr 2021
Posts: 43
Default Re: 1938 85 1.5 ton gearing
That's alot better than what I have!
Thank you

Now to find one of those two gears!!


Quote:
Originally Posted by truckdog62563 View Post
The calculator I’ve used bases speed on engine RPM. Guessing 2500 rpm with the 5.14 and 34” tires it gives 49.22 mph. Stu

https://spicerparts.com/calculators/...rpm-calculator

Edit: playing with this it looks like a 7.00-20” tire at 35” tall gets you up to 50.66 mph.

https://spicerparts.com/calculators/...rpm-calculator
Supertuner700 is offline   Reply With Quote