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Author Topic:   high gear
bryanb30
Dirt Freak

Total posts: 243
posted May 13, 2003 06:47 PM  
what gear ratio would i need if i wanted to run in high gear. this is a camaro hobby stock . engine is stock except for cam, which is 480 lift. car weighs 3400 the rearend is a ford 9" with a 3 speed sag. im using 2015 hoosier tires and the rollout on them is from 85 to 87 inches.. im running the car in 2nd now with 410 gears but its turning too many rpms oh yeah the tranny has no grooves on the shaft..

jammin james
Dirt Maniac

Total posts: 118
posted May 13, 2003 07:24 PM  
what size track???

john sallstrom
Dirt Roller

Total posts: 16
posted May 13, 2003 07:34 PM  
We have a similar set up on a 1/2 mile track and use a 6.00 to a 6.33 gear and turn from 6500 to 7300 rpms.

bryanb30
Dirt Freak

Total posts: 243
posted May 13, 2003 08:55 PM  
sorry, the track is a med. banked 3/8 mile but its pretty wide so up high its probably 1/2 mile

justin
Dirt Freak

Total posts: 263
posted May 13, 2003 09:25 PM  
Since you've basically got a stock engine and I assume you can only run a 2-barrel of some sort, I would run somewhere around a 5.90-6.00 final drive (gear).

justin

towmandan
Dirt Freak

Total posts: 370
posted May 13, 2003 11:16 PM  
Sounds like you need a 6.30 to 6.50 depending on how much you want to twist it...towman

FirstLight7
Dirt Full Roller

Total posts: 69
posted May 14, 2003 10:27 AM  
Several years back - Camaro 350 2brl with same tire rollout (hoosier e-mod), when hooked up the mild engine would lug out of the hole on a 1/2 mile track with a 6.50 final. I don't remember what it tached but the RPM's weren't extreme.

Are the tires busting loose or are you taching too much at the end of the straight?

racer17j
Dirt Forum Champ
Total posts: 5390
posted May 14, 2003 10:24 PM  
We run a 1972 firebird in the street stock in high gear with a 6.50 ratio in a ford 9" rearend and a GM 3 spd. tranny. This is probably what you're lookin for.

bryanb30
Dirt Freak

Total posts: 243
posted May 26, 2003 12:39 AM  
thanks for all the input, im going with the 6.50 gear and ill let yall know how it works out

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