what gear to run for the burg with a 410 motor with 486 rearend

HoosierDirt · 5/18/10, 8:40 PM

what gear would you run for a 3/8 mile track like Lawrenceburg where running a 410 aluminum motor with a 486 rearend the person i got the motor from told me to run it around 7200 to 7400 rpms we ran sat with a 612 gear and the rpms where 7700 rpms this is our first year in sprints any help would be great

CRA91 · 5/19/10, 11:08 PM

I would run anywhere from a 5:63 to a 5:97,now I've only run a midget at the track since it was redone and i'm basing this off of what gear we ran with the midget.It sticks in my mind that some friends of mine running a sprint car there told me that was the range they were in.If you ran there with a 6:13 and were turning 7700rpm,Iwould say if you went to either a 5:75 or a 5:83 that should put you in the RPM range you're looking for.
Hope this helps you out.

HoosierDirt · 5/21/10, 12:01 AM

I was wrong on the gear we had in it ...it was a 6:07 gear

CRA91 · 5/21/10, 1:29 PM

The difference in Rpm from a 6:13 to a 6:07 isn't much at all,so I'd still say to try either the 5:75 or the 5:83.

5/19/10, 11:08 PM	#2 Re: what gear to run for the burg with a 410 motor with 486 rearend
CRA91 Senior Member Join Date: Jul 2007 Posts: 1,377	I would run anywhere from a 5:63 to a 5:97,now I've only run a midget at the track since it was redone and i'm basing this off of what gear we ran with the midget.It sticks in my mind that some friends of mine running a sprint car there told me that was the range they were in.If you ran there with a 6:13 and were turning 7700rpm,Iwould say if you went to either a 5:75 or a 5:83 that should put you in the RPM range you're looking for. Hope this helps you out. __________________ Terry James Jr.

5/21/10, 1:29 PM	#4 Re: what gear to run for the burg with a 410 motor with 486 rearend
CRA91 Senior Member Join Date: Jul 2007 Posts: 1,377	The difference in Rpm from a 6:13 to a 6:07 isn't much at all,so I'd still say to try either the 5:75 or the 5:83. __________________ Terry James Jr.

5/18/10, 8:40 PM	#1 what gear to run for the burg with a 410 motor with 486 rearend
HoosierDirt Member Join Date: Jul 2008 Posts: 55	what gear would you run for a 3/8 mile track like Lawrenceburg where running a 410 aluminum motor with a 486 rearend the person i got the motor from told me to run it around 7200 to 7400 rpms we ran sat with a 612 gear and the rpms where 7700 rpms this is our first year in sprints any help would be great

5/21/10, 12:01 AM	#3 Re: what gear to run for the burg with a 410 motor with 486 rearend
HoosierDirt Member Join Date: Jul 2008 Posts: 55	I was wrong on the gear we had in it ...it was a 6:07 gear