What Size rear is the back?
04-03-2006, 12:17 AM
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Car: Trans Am GTA
Engine: 5.7L TPI
Transmission: TH-350
Axle/Gears: 3:23
What Size rear is the back?
I know i have the stock 10 bolt. Im looking at getting some 3.73 gears.
04-03-2006, 12:38 AM
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Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Generic name is a 7-1/2 but technically your 91 will be 7-5/8" They're identical except for the slightly larger ring gear. Parts are all interchangable.
You'll also have 28 spline axles.
You'll also have 28 spline axles.
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