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Need some help choosing gears?

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Old 02-10-2009, 12:19 PM
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Default Need some help choosing gears?

I have a 2000 FORMULA FIREBIRD.I have a six speed. I want to run 3.90's for the simple fact everyone i have met with similar cars run 3.73's.So i want a lil more jump on the competition? But i dont want to sacrifice too much top end?? Right?My car is basically only a weekend ryder and to car shows and race tracks. I would like to know peoples info on there gear changes and how they liked them?

Last edited by 209ryder; 02-10-2009 at 12:27 PM.
Old 02-10-2009, 01:40 PM
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3.90s are a nice gear, but don't except your car to be leaps and bounds faster than a similar car with 3.73s

If you want a bigger jump on them, get a 9" with some big gears and a pair of M/T ET Radials. They'll probably be launching softly/spinning, while you can launch/hook hard as hell and not worry about breaking that 10 bolt
Old 02-10-2009, 03:45 PM
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3.90 as stated won't be much of a difference for you.....4.10/4.11 would be.....you'll be fine.
Old 02-11-2009, 12:15 AM
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Thanks for the info guys. So my next question is there a preference in brands like motive, or richmond,summit,ratech? So im pretty positive that im gonna go with the 4.10's. Iam looking at hooker headers for my ride too.
Old 02-11-2009, 08:26 AM
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Richmonds tend to whine a bit. I haven't heard much from Summit gears, but the one review I've heard they did well. Motives are a good brand, they don't seem to whine as bad as Richmonds in my experience. The best bet usually is to get some OEM gears
Old 02-11-2009, 07:50 PM
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So i should go get them from gm performance parts than??they are probly way more expensive huh?? Well thanks for the advice and wish me luck hahahahaha
Old 02-11-2009, 08:54 PM
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i ordered mine from www.speedinc.com. motive makes the gears for gm if im not mistaken. they have a pretty good price on gears and install kits. mine were less than 300
Old 02-11-2009, 10:13 PM
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motive 4.10s ftmfw
Old 02-12-2009, 10:02 AM
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I'm guessing your installing them in your 10 bolt. Go with 4.10s, and don't even remotely consider any less gear.

I had 4.10s in the 10 bolt and now 4.30s in the M9.
Old 02-12-2009, 12:37 PM
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Yeah so im gonna go with the motive 410's ordering them today. thanks for all the info. And yes its going in my stock 10 bolt. Doing it myself hopefully by this weekend. but they will be in for sure next weekend!!!!
Old 02-12-2009, 12:53 PM
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You won't be disapointed. Let us know how you like them.




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