What type/size rears,came from factory on 86 IROC's??
Thread Starter
Senior Member
Joined: May 2001
Posts: 509
Likes: 1
From: N/a
Car: 1986 IROCZ
Engine: LB9....rebuilding coming soon
Transmission: rebuilt 700R4
What type/size rears,came from factory on 86 IROC's??
Like 8'5 inches,9 bolt,I need to know cause I'm ordering new rear gears soon
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Drive it like you stole it
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Drive it like you stole it
TGO Supporter
Joined: Aug 1999
Posts: 14,811
Likes: 1
From: Jackson County
be best to look under your car than posting here asking
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ICON Motorsports
1st & 3rd
MM Black Diamond 538 F&AM
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ICON Motorsports
1st & 3rd
MM Black Diamond 538 F&AM
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Automatic or manual? Check the tech database, it lists all engines and what rear end gears came with them.
You should have a 7.5"/7.625" 10-bolt, but it could be 2.73, 3.08, 3.23, or 3.42.
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1991 Camaro Z28
5.7L 5-Speed (originally 305)
317 RWHP, 418 RWTQ
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Member: SoCal F-Bodies
-=ICON Motorsports=-
You should have a 7.5"/7.625" 10-bolt, but it could be 2.73, 3.08, 3.23, or 3.42.
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1991 Camaro Z28
5.7L 5-Speed (originally 305)
317 RWHP, 418 RWTQ
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Member: SoCal F-Bodies
-=ICON Motorsports=-
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