simple questions
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Joined: Oct 2001
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From: canada
simple questions
ok i have a 89 formula 305 tbi with a 10 bolt pattern on the rear... can anyone tell me what rear end i have.. ohh its automatic... did any of this type of rear-end come with posi?? thanks in advance for your help
Corey
Corey
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Joined: Sep 2001
Posts: 6,111
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From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
It's more than likely 2.73:1. Posi was an available option
If when you drive on the hiway @100Kph in *drive*(not OD), and your tach reads right around 2350/2400 rpm, you have 2.73:1 gears.
If when you drive on the hiway @100Kph in *drive*(not OD), and your tach reads right around 2350/2400 rpm, you have 2.73:1 gears.
Last edited by F-BIRD'88; Jan 3, 2002 at 02:07 PM.
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