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Which gears for my car and the 1/4 mile???

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Old 03-21-2009, 08:59 AM
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Question Which gears for my car and the 1/4 mile???

Hey guys I am currently completing the build of my car. I currently have a fab 9 rear with 4.30 gears and running on 28 inch slicks and drag radials, M6 with suspension. The new motor is a Raymac 408 built for about 700 hp engine dyno and have a direct port NX system which I will shoot another 200 to 300hp for track passes. My concern has been I may run out of gear with the current 4.30 gears. I am scheduled to put my new spool in with 4.10's. Rev limiter will be set at 7200 rpm.

Can I make the full 1/4 mile with 4.30's without running out of gear or should I drop down to 4.10's???

TIA

Jay
Old 03-21-2009, 09:03 AM
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i would drop down in gear myself..
Old 03-24-2009, 07:16 PM
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Thanks, anyone else
Old 03-25-2009, 10:47 PM
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Richmond Gear has a good calculator on their website. use your existing numbers and figure in the mods. chances are you may even need a 3.89.
Old 03-25-2009, 11:08 PM
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Thanks Steve
Old 04-01-2009, 10:22 PM
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Gotta be someone here with a similar setup as mine?????




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