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Author Topic:   Need help
kenny petitt
Dirt Full Roller

Total posts: 32
posted August 13, 2005 03:04 PM  
I just bought a metric car and It has a 620 gear ratio. if i put a turbo 350 trans in the car.and running d 55 hoosiers 90s or 92s will that be the right gear for a 1/3 clay banked track? thanks

U LIFT U LOOSE
Dirt Roller

Total posts: 20
posted August 13, 2005 04:12 PM  
ALL DEPENDS ON YOUR CAR. MOTOR SIZE,CARB, WEIGHT, HOW MANY RPMS YOU WANT TO TURN AND NOT EVERY 1/3 MILE IS THE SAME. I HAVE RAN A 6.83 AND 7.00 AT 2 DIFFERNENT 1/3 MILES AN TURNED ABOUT THE SAME RPM. I TURNED ABOUT 7700 WITH A 4BBL IN A 3000LB CAR, GOOD 355 WITH ABOUT 89" TIRES. TALK TO THE GUYS YOU ARE GOING TO BE RACING WITH SEE WHAT GEAR THEY ARE RUNNING AND HOW MANY RPMS THEY ARE TURNING. EVERYONE AROUND HERE IS PRETTY CLOSE AT EVERY TRACK WITH THE GEARS THEY RUN.

sc1 racing
Dirt Freak

Total posts: 419
posted August 13, 2005 07:46 PM  
6.20 will be fine we run 6.00-6.33 on a wide open 1/3 and ran between 6,500-7,200

that was with a 84 roll out..

kenny petitt
Dirt Full Roller

Total posts: 32
posted August 14, 2005 12:34 PM  
I.m running a 4bbl carb with a good 383 chevy motor. hope to turn 6500 or some wheres close

U LIFT U LOOSE
Dirt Roller

Total posts: 20
posted August 14, 2005 03:21 PM  
TRY THE 6.20 THEN IF THATS WHAT YOU GOT ALREADY AND THEN IF YOU NEED TO ADJUST THAT SHOULD BE CLOSE BUT YOU MIGHT NEED A 6.33 OR A 6.50.

kenny petitt
Dirt Full Roller

Total posts: 32
posted August 15, 2005 06:47 PM  
if i am running a turbo 350 in 3 gear do you think in will down shift in the turns?

U LIFT U LOOSE
Dirt Roller

Total posts: 20
posted August 17, 2005 09:44 AM  
If is a stock 350 that might be a problem but I doubt it. If it is you can put a manual valve body in it to solve this problem. If your rules allow a manual trans I would sugest this route for stock type rules. If you are are allowed to run a coupler instead of a torque converter I would suggest a bushore powerglide. It would be money very well spent.

    

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