I spotted a 1977 Chevy Motorhome in the local junkyard last week, and it had a Hydroboost behind the master cylinder. I've known of Hydroboosts for a while, but had no idea when the manufacturers (I think it's actually a Bendix product) started using them in OEM applications.
From what I can tell, 1977 is towards the beginning of their use. I grabbed it, and the hydraulic lines, of which some I had to cut. In this application, the reservoir had nipples for 2 return lines.
So, has anyone done an upgrade from a vacuum booster to Hydroboost? Any advice, etc?
When I put the 454 in my convertible back in 2006 the brakes were terrible, too much cam caused low vacuum. I tried a vacuum pump, but abandoned it right away as it shook the whole car. I resorted to a vacuum cannister, which improved things but not to where they should be.
I changed cam's a couple years ago (when I planned on installing my vacuum powered cruise control) and again while better, braking still isn't what it should be.
As I got this Hydroboost for $28, I figured it might be a good starting point for an upgrade.
While I had to cut some of the lines (mainly the pressure line from the power steering pump to the Hydroboost), I have a cousin here in town that works at a hose place that can make me up whatever I need.
-- Edited by seventy2plus2 on Monday 5th of December 2022 06:18:58 PM
Did you buy a kit complete with lines? Or did you piece it together?
I've also learned the 1995 & prior hydroboost units have the 1-5/8" hole to accept the master cylinder. I measured an old master cylinder removed from one of my cars, and it matches that measurement.
I bought this 1 with the wilwood master,took 4 months to get it.
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Did you buy a kit complete with lines? Or did you piece it together? I've also learned the 1995 & prior hydroboost units have the 1-5/8" hole to accept the master cylinder. I measured an old master cylinder removed from one of my cars, and it matches that measurement.
I grabbed a nearly new booster from a wrecking yard and got the kit from Hydratech braking systems.
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pontiax- (canadian pontiac X frame)1964 Parisienne 2dr. Hardtop ,lagoon aqua metallic (Q) ,421 cid Dart Industries block and heads. 550 hp. 575 ft lb of torque.
