Speedo Gear Correction

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Feb 15, 2007 | 08:54 AM

whitez406

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From: Reading, Pa

Speedo Gear Correction

A friend just installed 3.73's in place of some 2.56's in his camaro. He has a 26" tire and has th350 wiht 3.73's can anyone figure out what color drive and driven gears he needs. Thanks

Feb 15, 2007 | 11:26 AM

Lo-tec

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From: Gambrills, Md

Car: clapped out 84Z

Engine: 355 efi roller

Transmission: tremec TKO

He will need a 21 tooth gear and a 7 tooth gear; couldn't tell you what color they are.

Feb 15, 2007 | 11:34 AM

whitez406

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From: Reading, Pa

Great what formula do u use to figure it out?

Feb 15, 2007 | 04:56 PM

Sonix

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From: Calgary, AB, Canada

Car: 1982 Trans-Am

Engine: 355 w/ ported 416s

Transmission: T10, hurst shifter

Axle/Gears: 10 bolt, true-trac, 3.73

you can use this spreadsheet
https://webdisk.ucalgary.ca/~jmknopp...eed%20calc.xls

21 is red
7 is a tealish green.

Try www.thetransmissionshop.com I think. They have some info there.

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