Borg Warner??
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Joined: Apr 2000
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From: The Great White North
Borg Warner??
Ive got an 89 iroc-z with 350 tpi, 700-R4, and the borg warner rear end that had original 2.77 gears. The guy I bought it from said it had 3.42's now. Is that possible since its such an obscure rear end. Isn't it more likely the 3.45's that came with some camaros. Also has anyone made this swap and knows what speedometer gears to use to correct the speedo.
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
Count the bolts on the differential cover, to see if maybe the guy swapped it with a 10-bolt. If it has 9 bolts, its a 9-bolt, and 10 bolts, its a 10-bolt rear end. Easy huh? 
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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-
------------------
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-
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