i am tossing my old drum rear in my 91z28 and replacing it with a 4th gen rear rear with disc and need to know how the brakes will work. do i need the brake booster out of a 4th gen or just get a different proportioning valve

 

You're doing almost the same thing I am...Use a 3rdgen disc brake proportioning valve and a master cylinder to match. You should be OK with your existing P/B booster. As far as how your ABS will work, I really don't know...all I know is the early 4th gen rears had a sensor for both rear wheels on the top of the axle and later rears had one sensor per wheel (I think, somebody correct me if I'm wrong). I was actually thinking of swapping in valves and an EBCM to convert my '86 IROC to ABS, but cannot find enough info, and all kits that will actually work cost $$$. I have heard of these swaps, but as I said, I cannot find info. Anyway, use those parts and you should be OK. Change your hoses to stainless while you're at it (if you didn't already).

[This message has been edited by dhirocz (edited March 26, 2001).]

 

Dont worry about the ABS. Your car doesnt have it, but the 4th gen brakes will work just fine.

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West Coast GM Shootout 2001!
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=-

 

Wait a second, the 4th gen rears are a wider unit are they not? Although I suppose that if they bolt in ok then they would probly work if your using a 4th gen wheel/tire combo. I'd be interested in how that works out. So even though the 4th has ABS it'll work just fine with the correct prop. valve?

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1984 CAMARO BERLINETTA
355 HP VORTEC HEADED 350

350, Vortec heads, Crane High energy cam, edelbrock Air Gap intake(for Vortec heads!)
Pete Jackson gear drive, 9.5:1 comp, Edelbrock TES headers, high flow Cat, custom exhaust,
Hypertech HEI, Custom built 700R4 tranni by S&S Performance Transmission
3.73 10-bolt(soon to be 9bolt with rear disk) 2 3/4 cowl induction fiberglass hood.

 

yes the 4th gen axels are longer...if you run the 4th gen wheels youll will need to get spacers for the front andris skulte performance design has the best i have seen i am getting mine in the next month hopefully
just check out his site
hope this helps

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82z28 with 300 horse 355 stock fiberglass hood, converting from slusho 700r4 to stout th350 for right now art carr 2800 stall converter 4.10 gear
Aluminum driveshaft
Full energy suspension
polyurthene kit
Iroc suspension all the way around
4 wheel disc conversion
stainless steel lines and braided lines
Msd digital 6, billet distributer, and blaster coil
Holley blue pump
750 Holley vac sec w/victor jr intake Sportsman II heads froged pistons, rods, and crank 4 bolt mains, Slp 1 3/4 inch headers no cat and 3" Borla all the way back
All I need is fuel injection and a blower and I wil be very happy.....I am awaiting blower and newer 3rd gen with 5 speed and tpi.....I am upgrading to 6 speed and tpis miniram with zzx cam and full Spohn suspension