4th gen or 3rd gen????
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Junior Member
Joined: Mar 2006
Posts: 90
Likes: 0
From: Michigan
Car: 1988 camaro SC
Engine: 355 four bolt
Transmission: th350
Axle/Gears: 3.73
4th gen or 3rd gen????
i have two rear ends relatively near me in my price range. ine is a 1996 z28 rear with 3.23 gears and discs.
the other is a 3rd gen. BW 9 bolt with 3,27 gears and discs.
ive read up on both and i know what i need to do both swaps, im still not sure. help me out.
the other is a 3rd gen. BW 9 bolt with 3,27 gears and discs.
ive read up on both and i know what i need to do both swaps, im still not sure. help me out.
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
Re: 4th gen or 3rd gen????
The 9-bolt rear end will be stronger, but the aftermarket support is a lot smaller. I would still get the 9-bolt rear.
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Joined: Aug 2007
Posts: 2,529
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From: Fairhope, AL
Car: 89RS(other cars & pics in vBgarage)
Engine: LO3, 305 TBI Mildly Modified
Transmission: BakerBuilt 700R4 w/B&M Megashifter
Axle/Gears: 3.23 Auburn Pro Series LSD
Re: 4th gen or 3rd gen????
BW 
also 
Joined: Dec 1999
Posts: 3,544
Likes: 19
From: WI,USA
Car: 89 FORMULA 350, 91 Z28 Convertible
Engine: ls1, LB9
Transmission: t56, Auto
Axle/Gears: S60/ 3.73
Re: 4th gen or 3rd gen????
BW 9 is what I would get and run. does the 9bolt have pbr rear brakes? if not I would do the swap to the pbr
Thread Starter
Junior Member
Joined: Mar 2006
Posts: 90
Likes: 0
From: Michigan
Car: 1988 camaro SC
Engine: 355 four bolt
Transmission: th350
Axle/Gears: 3.73
Re: 4th gen or 3rd gen????
thanks guys. turns out hes going to throw in the m/c and the prop. valve so i think ill do that. and if anyone needs a rear end i have found a bunch in the s/e michigan area let me know. lots of fourth gen. rears with low miles
Supreme Member
Joined: Mar 2003
Posts: 4,771
Likes: 15
From: Florida
Car: 1987 Black IROC-Z (SOLD)
Re: 4th gen or 3rd gen????
You will not need the m/c, just the proportioning valve. But the most important is the the Parking brake cables for that 9-bolt.
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