New to non wing sprint car racing this year. We have 410 w/ 4.86 rear end and im trying to get a rough idea on gearing for 1/4 mile to 1/2 tracks and will gear that fit in are 4.33 rear end for a midget work with the 4.86 sprint rear end.


thanks
derrick myers

no the splines are not the same.but buying used gears is no problem they are tuff.and you can find deals out their

1/4 mile final drive # 6.40's -6.70's , 1/2 mi. 5.80 -6.03

Depending on your motor and driving style.. 1/4 mile 5.88 to 6.26
1/2 mile 4.86-5.23

I agree with dustbowl on the 1/4 gears,but for the 1/2 miles it all depends on how the track was actually measured, i've ran gears from 4.86 - 6.03 all on tracks that were called 1/2 miles.On a true 1/2 mile track i would go with 4.86-5.42 based on track conditions (tacky or dry)

Anyone runs these #'s with a 410, it'll have block ventilation very quickly!

what gear would you run for a 3/8 mile track like Lawrenceburg speedway or north vernon