3.08 to 3.73, speedo questions
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Joined: Oct 2001
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From: Englewood, CO
Car: 1990 Trans Am
Engine: Lb9
Transmission: factory T5
Axle/Gears: 3.08 limited slip
3.08 to 3.73, speedo questions
Okay so here are my questions, first how many teeth would be on the drive gear of an '83 700r4 from a 3.08 car, and with what driven gear could i make the speedo accurate using this tranny.
Also under what circumstances would i NEED to change the drive gear. Thanx
Also under what circumstances would i NEED to change the drive gear. Thanx
Joined: Mar 2000
Posts: 5,703
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From: Orange, CA
Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
You will need a 15 tooth drive gear and a 45 tooth driven gear. You will also need the offset housing. (for the bigger gear)
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From: San Jose, CA
Car: 2002 Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: 3.23
use the calculator at www.700r4.com
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iTrader: (2)
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From: Englewood, CO
Car: 1990 Trans Am
Engine: Lb9
Transmission: factory T5
Axle/Gears: 3.08 limited slip
thats just a calculator though, it gives me no definite answer to how many teeth the stock drive gear has.
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Joined: Sep 2003
Posts: 107
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From: Lyon,MS
Car: 1987 TransAm
Engine: 350 Goodwrench
Transmission: 700R-4
Drive gear 17 teeth, speedo gear 41-43 teeth. Dependes on your tire size what speed gear you use. Check out Tricksters answer and chart to my question Speedometer drive gears.
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