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Author Topic:   Gear or tranny
Big Bird
Dirt Full Roller

Total posts: 27
posted May 09, 2002 09:00 PM
I'm running a 557 gear and a three speed tranny. my friends are running 600 gear would it help me if i put in a for speed would it get me closer to 600' I'm running in third on the three speed.I didn't mean closser to 600 but more rpms.thanks for any help

Dirt Forum Racer

Total posts: 82
posted May 09, 2002 09:20 PM

Big Bird, your rear gear alone nor your tranny alone will dictate your final RPM's. Not all 3 spd's have the same gear and not all 4 spd's have the same gear, Saginaw for example has 4 different 4 spd's with all of them having different gearing. You need to know the final drive you want, just ask your friends, and then work from there. Your final drive is(rear gear X tranny gear). For example if you are running a 557 rear in third gear (usually 1.00) your final drive will be 5.57 X 1.00= 5.57 .....I personally have a 2.73 rear and 2.20 in 2nd gear for a final drive of 6.00 I dont know if you will get a tranny with the right gear to put you at 6.00, but if I had to error to one side or the other, I would prefer to run less RPM's like you are to preserve my motor. You can even get more RPM's if you go to smaller tires. Check out the tool box here in the forum. It is a gold mine!!! It has helped me unbelieveably... Brandon

Dirt Forum Champ
Total posts: 1565
posted May 10, 2002 03:30 AM UIN: 54865418
myself i would just find a 60 gear or like ny said go to a smaller roll tire like about 2 inches shorter than you are running now

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