gearing for 410 w/ 4.86 rear end
 

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

Re: gearing for 410 w/ 4.86 rear end
 

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

Re: gearing for 410 w/ 4.86 rear end
 

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

Re: gearing for 410 w/ 4.86 rear end
 

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

Re: gearing for 410 w/ 4.86 rear end
 

Originally Posted by dustbowl:
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)

Re: gearing for 410 w/ 4.86 rear end
 

Originally Posted by dant:
1/4 mile final drive # 6.40's -6.70's , 1/2 mi. 5.80 -6.03

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

Re: gearing for 410 w/ 4.86 rear end
 

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