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Author Topic:   Gear Experts Pls Help
pjfreak
Dirt Roller

Total posts: 5
posted June 08, 2005 07:56 PM  
I need some advice on gears. We have a 79 Monte Carlo and will be racing on a 1/2 mile track in the enduro class. We have a powerglide and run it in low ( the lowest gear). We have tried a 308 gear and the RPMs are too high. Around the back tires equals 87 inches. I'm guessing we need to run a 273 gear. We want to run about 5800 RPMs.

Thanks for the advice.

sideways
Dirt Forum Champ
Total posts: 715
posted June 08, 2005 08:35 PM  
That would be real close.The modifieds around here only run a 5.43 final on a 1/2 mile.I think that would be real close.

purestock_4
Dirt Newbie

Total posts: 1
posted June 08, 2005 09:52 PM  
i run an 85 monte with on a 3/8 mile track with 2.73 gears and a turbo 350 tranny in low gear and run about 5600 rpms. I thats any help.

racer17j
Dirt Forum Champ
Total posts: 5390
posted June 08, 2005 09:53 PM  
I ran a enduro on a 3/8 mi track with a 2.73 gear,th350 trans in 1st gear,it was too much gear for 200 laps,Im going to try a 2.28 for the next one.

pjfreak
Dirt Roller

Total posts: 5
posted June 09, 2005 08:36 AM  
quote:
Originally posted by racer17j:
if you click on the green menu icon in the upper left of your screen open up the tool box you can use the calculators to figure what the best selection is for you . what are you running for a motor? you wewre at 560 with an 87 on a 1/2 that doesn't sould like you would turn more then 5500 unless it's a super long one are you sure ytour tach is set right ?


We have a new tach and are running a 350 for a motor. The track had some pretty steep banking so the corner speeds were pretty high. They took the banking off now.

rogracer2
Dirt Maniac

Total posts: 119
posted June 16, 2005 08:05 PM  
HEY PURESTOCK4, WHAT TIRE ROLL (OR SIZE TIRE) DO YOU USE? JUST CURIOUS BECAUSE I USE THE SAME GEAR AND REAR END COMBINATION...


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