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 Post Posted: Fri Oct 02, 2015 9:16 pm 
Pro Stocker

Joined: Sat Dec 15, 2007 5:01 pm
Posts: 1472
Location: South Florida
From my understanding, the powermaster units constantly have issues. My powermaster was replaced by the previous owner with a vacuum set up.

If I am converting to 4 wheel disc brakes, is there any sense of correcting and replacing my unit with a powermaster? Or just stay vacuum?

It's a car driven once a month or two and that's about it.

 Post Posted: Wed Oct 07, 2015 7:17 pm 
MalibuRacing Junkie
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Joined: Sat May 15, 2004 7:26 am
Posts: 15822
Location: North Jersey
If you don't have a huge cam, I'd say stick with the vacuum booster. Less mechanical items to fail. Also, if you're switching to 4 wheel discs, you need a different master cylinder and combination valve, too.


20k mile '80 Malibu, currently undergoing long term (aka no money) factory style install LS6 454, Cowl Induction, Legend LGT 700 5 speed. Full Global West suspension, 17" N90 wheels, 12" front/11" rear disc brakes, 9" 3.70 Auburn Pro posi.

"The older I get, the faster I was"

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