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Old Oct 24, 2005 | 11:04 PM
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Default Which gears to go with

Ok I'm going to get a 12 bolt and can't decide what gears to go with 3.42, 3.73, or 4.10's. My car has an M6 with bolt-ons and a 150hp shot of nitrous. I am running MT ET Street radials on stock rims and do NOT want to get taller tires. I shift at around 6k. I plan on doing a cam in the near future. What gear ratio should I go with? Also should I go with strange or motive gears. Thanks in advanced.

-William
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Old Oct 25, 2005 | 06:13 PM
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i run a 4.11 w.150 shot on a h&c car m6.but,you shift much sooner then i do so the 3.73 will fit you real nice. i had a 3.73 once and it is a nice gear.stay away from the 3.42 it dont give you enough push out of the hole on motor.i went w/u.s gears from thunderracing. goodluck to ya.
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Old Oct 25, 2005 | 07:05 PM
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if you want to spray a bolt on car with stock height tires - 3.73 is the deepest you could go. i crossed the traps a little before 6 grand with a 4.10 and stock wheels. so you wouldn't be able to spray on top of that.
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Old Oct 25, 2005 | 09:24 PM
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Originally Posted by imslow
if you want to spray a bolt on car with stock height tires - 3.73 is the deepest you could go. i crossed the traps a little before 6 grand with a 4.10 and stock wheels. so you wouldn't be able to spray on top of that.

I agree, but think its best to run 4.10s with a bigger tire when you spray. I have 3.73s and they feel like stock.
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Old Oct 25, 2005 | 09:37 PM
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I would say 3.73 as well.
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Old Oct 25, 2005 | 11:02 PM
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4.10's and a taller tire. you can bump the revlimiter up a bit if need be.
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Old Oct 25, 2005 | 11:19 PM
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i'd go with 3.73's
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Old Oct 26, 2005 | 09:23 PM
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Ok thanks a lot guys that really helps out. My only other question is how will my stock drive shaft hold up under launches. What RPM should I be leaving out of the hole at. Thanks again

-William
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Old Oct 28, 2005 | 10:20 PM
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i've seen stock drive shafts hold up on way more then you have. mine was good,but the stock tq-arm is what went for me. when it went it took the drive shaft with it. i now have the alum-drive shaft from summit at it has held great. with a 12 bolt launch where ever you need to hook. start at 4,000rpm's and move up ti'll you find the sweet spot. good luck to ya.
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