Cascade Crew

83Z28BlackBetty

Can i use a master cylinder from a 4th gen?

does anyone have one lying around? mine is leaking out under the reservoir.

~JAKE

iansane · Posted: Mon Feb 16, 2009 5:17 pm Post subject:

You can. I'd try to get one from the later 4thgens to get the low fluid switch built into the resevoir.

Actually, I think I have a couple thirdgen ones laying around. Or you could always try rebuilding yours. Very Happy

Al Hasse · Posted: Mon Feb 16, 2009 6:52 pm Post subject:

Bolts right up to the booster. Only issue I had was thread depth for the flare fitting. I used a set of adapter lines from NAPA when I installed my adjustable prop valve, and their fitting that is the size for the rear didn't have enough threads on it to seal the flare, I took the stock fitting off my old line and flares it onto the NAPA line.

I've still got my stocker lying around in the garage.

blue89 · Posted: Mon Feb 16, 2009 10:30 pm Post subject:

Yuppers. Love mine. I don't think the 4th gens had drum rears, so if you have drums on your's I wouldn't recommend it. I have two stock 3rd get 86+ cylinders and resevoirs in the garage.

Al Hasse · Posted: Mon Feb 16, 2009 10:35 pm Post subject:

He's converted to a disc rear.

I got my master from NAPA and it came with the reservoir. I tried used and got one that leaked badly so I sucked it up and bought a new one and don't regret it. 2002 Camaro SS.

90droptoproc · Posted: Wed Feb 18, 2009 4:03 pm Post subject:

may want to check that your fittings are metric

Twilightoptics · Posted: Wed Feb 18, 2009 6:30 pm Post subject:

Mid-late Thirdgen fittings are metric bubble flare.

I recommend new master cylinders always. Those crazy ... uh.... rebuilders.... don't seem to be able to read the blueprints.

90droptoproc · Posted: Wed Feb 18, 2009 9:35 pm Post subject:

I know my 82 had standard thread, had to cut the ends and re flare for new fittings when I bought a new master

blue89 · Posted: Thu Feb 19, 2009 7:55 am Post subject:

You most definetly do have to use different piping. What I did was used the rear piping of the 3rd gen and the front piping from the 4th gen. That way I only had to put new nuts on the proportioning valve and front tee.