This is probly a dumb question but if I change my rear gears to 3:23s instead of my stock 2:73 will I need a larger carrier also?? this is what I've been told, I thought of going to 3:08s also I just want to go the economical route and keep the stock carrier..... Thanks for any advice

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91 Black Z28 5.0 Auto.
T-top,factory cd player
All Stock

 

I went from 273s to Richmond 373s (stock 7 5/8 10-bolt) and kept the stock diff.The ring gear is made thicker to avoid the use of spacers.

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91Z28 406,mini-ram,Track-1s,232/242 roller,Wiseco 9.5:1 pistons,6"Eagle rods,Callies crank,Speed Pro EFI w/ wide band,Weldon 2015,Nitrous Express 150,Turbo350 w/ 10"ATI,12-bolt 373s,Southside bars,Centerline Warriors,28x11.5 ET Streets Best N/A: 11.22,120mph...10.41/129 with 150 shot

 

For whatever it's worth I installed an auburn limited slip made for 2.73 and up gears and retained my original GM 3.73's.

 

Hey fellow SoCal'er! You can buy special 3.23 gears made for a 2.73 posi unit. But if you're getting stock gears from another car, you need the posi unit too. Your best and easiest solution is to get a set of 3.23's or 3.42's off a 4th genner, and the SLP take-off posi unit, and the correct speedometer gears, and have that installed. The SLP posi is a 3-series and will bolt right into your car with the 3.23/3.42 gears.


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1991 Camaro Z28
5.7L 5-Speed (originally 305)
317 RWHP, 418 RWTQ
13.23 @ 107.62 MPH (2.10 60')
Southern California
Member: SoCal 3rd Gen F-Bodies
Member: SoCal F-Bodies
-=ICON Motorsports=-

 

Why does auburn sell posi units for 2.73 and up ratios? No special gears needed. It seems to me I could install 2.73, 3.08, 3.23, 3.42 and 3.73 with my carrier, so why are you saying he needs special gears. Just wondering....

 

Really? Maybe they changed something. I've always known that 3.08 and lower is 2-series and 3.23 and higher is 3-series and you cant mix and match them.