gearing for 410 w/ 4.86 rear end

dmyers25m · 3/30/10, 6:28 AM

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

v8j · 3/30/10, 9:18 AM

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

dant · 3/31/10, 5:57 PM

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

dustbowl · 3/31/10, 7:06 PM

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

CRA91 · 3/31/10, 10:46 PM

Quote:

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)

6565 · 4/1/10, 12:27 PM

Quote:

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!

HoosierDirt · 4/2/10, 10:58 PM

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

3/30/10, 6:28 AM	#1 gearing for 410 w/ 4.86 rear end
dmyers25m Member Join Date: Jul 2008 Posts: 19	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

3/30/10, 9:18 AM	#2 Re: gearing for 410 w/ 4.86 rear end
v8j Senior Member Join Date: Sep 2009 Posts: 591	no the splines are not the same.but buying used gears is no problem they are tuff.and you can find deals out their

3/31/10, 5:57 PM	#3 Re: gearing for 410 w/ 4.86 rear end
dant Member Join Date: Apr 2008 Posts: 191	1/4 mile final drive # 6.40's -6.70's , 1/2 mi. 5.80 -6.03

3/31/10, 7:06 PM	#4 Re: gearing for 410 w/ 4.86 rear end
dustbowl Senior Member Join Date: Apr 2008 Posts: 269	Depending on your motor and driving style.. 1/4 mile 5.88 to 6.26 1/2 mile 4.86-5.23

4/2/10, 10:58 PM	#7 Re: gearing for 410 w/ 4.86 rear end
HoosierDirt Member Join Date: Jul 2008 Posts: 55	what gear would you run for a 3/8 mile track like Lawrenceburg speedway or north vernon