| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,078 Posts1,056,036 Members48,433 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Feb 2007 Posts: 9 New Guy | | New Guy Joined: Feb 2007 Posts: 9 | Had my 57 truck running for a little while and don't feel that comfortable with the force required to stop fast.
I have a MasterPower dual diaphram w/ corvette style mstr cyl.with 4 wheel disks and all the proportioning stuff they recommend.
Masterpower recommends 18-20 inches of Vacuum at idle, I have 15 which is at worst case about 25% shy.
My question is has anyone used an electrical vacuum booster and does that extra 5 inches make that much difference?
Thanks,
Rich
| | | | | Joined: Apr 2005 Posts: 2,097 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,097 | In many cases high performance engines will not have enough vacuum for the brake booster to operate correctly. The system you installed should be more than adequate and require only moderate pedal pressure to stop at high speeds. You have a vacuum problem and a vacuum booster and possibly a storage canister may help. Check out www.abspowerbrake.com. They offer an electric booster that uses no vacuum. It is essentially the system used in late Corvette's. It's pricy but would eliminate any vacuum issues. Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine
| | | | | Joined: Dec 2003 Posts: 2,733 Shop Shark | | Shop Shark Joined: Dec 2003 Posts: 2,733 | Early GM (50's) power brakes used a vacuum reservoir that was nothing more than a 46 oz. Donald Duck style OJ can with a little nipple soldered on for attaching the hose. Worked fine. Just solder up the openings, add the connection and away you go. | | |
|
|
| |
