Transmissions and Drivetrain Need help with your trans? Problems with your axle?

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Old Jan 13, 2007 | 12:06 PM
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bigmaciroc's Avatar
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DO YOU KNOW...

does anyone know what rear end came in the 1985 iroc z?
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Old Jan 13, 2007 | 02:34 PM
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//<86TA>\\'s Avatar
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From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
10 bolt, 7.625 probably, and anywhere fron 2:73 to 3:23 gears
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Old Jan 14, 2007 | 05:42 AM
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Here's how to determinne what ratio the 10-bolt rear is (jerk the diff cover and look): numbers are stamped on the ring and pinion:

41 : 15 = 2.73
40 : 13 = 3.08
42 : 13 = 3.23
41 : 12 = 3.42
41 : 11 = 3.73

JamesC
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