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Author Topic:   gearing
jhon hollomon
Dirt Maniac

Total posts: 181
posted February 24, 2003 10:17 PM
I will be running a limited late model on a 3/8 mile high banked track(Central Missouri Speedway). Will a 6.50 gear be too much with a no line three speed in high gear? My tire rollout is around 90. Thanks for any input.

75xracer
Dirt Full Roller

Total posts: 40
posted February 25, 2003 09:12 AM
I used to run a LLM on a 1/4 mile with 6.50s, and if I remember correctly, it would turn about 7200 rpm. So, I guess it depends on what your engine can stand. In my opinion, 6.50s would put you in the 8000 rpm range on a 3/8 mile track.

jhon hollomon
Dirt Maniac

Total posts: 181
posted February 25, 2003 01:07 PM
Thats kinda what I was thinkink. That is the gear I ran in a street stock on the same track but i'll have more hp with this car.Do you think a 6.00 or a 6.20 sounds about right? I don't have a quick change.

75xracer
Dirt Full Roller

Total posts: 40
posted February 25, 2003 01:44 PM
I would probably go with a 6.20 or 6.33 to start with. Is it a 3/8 on the inside wall, or the outside wall?

jhon hollomon
Dirt Maniac

Total posts: 181
posted February 25, 2003 04:26 PM
I think they measured it on the outside. It is a pretty fast high banked track.

thebigdirt
Dirt Full Roller

Total posts: 33
posted February 25, 2003 09:53 PM
depending on track conditions we have ran as high as a 520 or as low as a 600. were is your peak rpm torque for exiting corners and peak rpm horsepower for straitaways. its all in the complete set up.

jhon hollomon
Dirt Maniac

Total posts: 181
posted February 25, 2003 10:19 PM
I've not ran this car on this track before so i'm just looking for a starting point so I don't start off too far off. sounds like i'll be ordering a 6.20 or a 6.33.

zeroracing
Dirt Maniac

Total posts: 141
posted March 05, 2003 12:54 AM
hey john its jason, we ran a 6.88 in the street stock and a 5.83 in the modified. i think i needed a 6.00 in the modified. the street stock turned around 7500+ rpm at times. and the mod only turned like 6400 i would say choose the 6.20 to start becuase the limited should be inbetween the streetstock and mod on speed with more bite then both i would choose the 6.20

jhon hollomon
Dirt Maniac

Total posts: 181
posted March 05, 2003 10:15 PM
That's what i'm gonna start with.

zeroracing
Dirt Maniac

Total posts: 141
posted March 07, 2003 01:18 AM
what kind of car are you running is it an older latemodel or a true super stock. good luck.

jhon hollomon
Dirt Maniac

Total posts: 181
posted March 07, 2003 09:34 AM
It's a stock stub shaw late model. It's got a mono leaf rear suspension. Just something to play with till I can either get a nicer late model or a modified.

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