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Author Topic:   Gearing
The Outlaw
Dirt Maniac

Total posts: 159
posted July 27, 2002 04:16 AM
I have a final drive ratio of about 7.80 or so, i need a 6.50 but right now, cant afford to buy new gears. besides running taller tires on the rear, is there anything else i can do, to not turn so many rpm's?

redneck racing
Dirt Freak

Total posts: 276
posted July 27, 2002 05:52 PM
If you have a Ford 9 incher try quick performance they have ring and pinions for the cheapest ive found $110.00 a set and mini spools for $16.50 http://www.quickperformance.com Eddie

racer17j
Dirt Forum Champ
Total posts: 1565
posted July 28, 2002 12:13 AM UIN: 54865418
what are you running for a tranny and rear end gear

The Outlaw
Dirt Maniac

Total posts: 159
posted July 28, 2002 04:08 PM
5.43 rear gear and a 1.68 second gear trans!

AC156
Dirt Freak

Total posts: 295
posted July 28, 2002 04:14 PM
by my calculations, you are currently running a 9.12 final. i have never heard of anyone running that low of a gear.

The Outlaw
Dirt Maniac

Total posts: 159
posted July 28, 2002 07:28 PM
well i ran it last night..lol car pulled like a mutha' out of the turns..

AC156
Dirt Freak

Total posts: 295
posted July 28, 2002 07:34 PM
how many rpms did you turn?

The Outlaw
Dirt Maniac

Total posts: 159
posted July 28, 2002 07:45 PM
have no idea, tach quit working, but it never floated the valves, actually it never even spun the tires much!

millerlt3
Dirt Forum Racer

Total posts: 96
posted July 28, 2002 09:56 PM
I agree with AC156, and I'm also suprized you have not twisted the motor in half with a 9.12 final. To get a 6.50 final you would need to either find a 3.86 rear gear and use your 1.68 trans or find a trans that has a 1.19 ratio and use your 5.43 rear gear. Another combo that will get you close is use your 1.68 trans with a 4.11 rear gear which will put your final at 6.90. Good luck.

markwillson
Dirt Roller

Total posts: 12
posted August 01, 2002 03:29 PM
i think you should just try using 3rd gear. it should be close without spending a dime?

The Outlaw
Dirt Maniac

Total posts: 159
posted August 01, 2002 07:05 PM
not enough oomph to pull it out of third , small tight track!

markwillson
Dirt Roller

Total posts: 12
posted August 04, 2002 10:49 PM
we run 1/4 drit, our fanil is 7.66. 4.56 rear, 1.68 6500 rpm's.our motor has 31 races, we're going up to a 4.33. a touch less bottom but quicker to the top with less rpm. get out of the gutter and a little higher line. let the car start to set with less gas entring, tap the brakes to set and hammer out. it will be atouch loose but loose is fast.you will have good speed into the croner,feather the hammer.



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