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Global Mod,
Mod | | | Forums66 Topics128,042 Posts1,055,511 Members48,424 | | 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!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
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#44074 01/15/2002 7:31 PM | Joined: Jan 2002 Posts: 18 Member | | Member Joined: Jan 2002 Posts: 18 | Does the 235 make enough vacuum to run power brakes? I just rebuilt mine, it is .030 over and I'm using the Corvette/261 cam so idle is not a problem. I haven't gotten the engine installed yet to check the vacuum. I'm wanted to change my master cylinder before I installed the engine. Thanks. | | |
#44075 01/15/2002 7:43 PM | | Anonymous Unregistered | | Anonymous Unregistered | abyars you really wont need power brakes.The pedal ratio is very good on this old trucks. However if you think you need it yeas ther is enough vaccum. Are you palnning a daul master and drums or drum/dis.?? | | |
#44076 01/15/2002 8:46 PM | Joined: Jan 2002 Posts: 7 Member | | Member Joined: Jan 2002 Posts: 7 | I AGREE WITH PHAT ,I HAVE DISC BRAKES ON MY 54 BUT HAD SO LITTLE VACUUM WITH MY SBC ( ABOUT 7)I DID NOT GO WITH POWER BRAKES AND REQUIRES VERY LITTLE PEDAL PRESSURE. I DID GO WITH A MUSTANG DUAL MASTER CYLINDER.
THANKS
DRIFTER
PS I'M THE ONE THAT CAUSED ALL THE TROUBLE ON THE OTHER SITE! | | |
#44077 01/15/2002 11:27 PM | Joined: Jan 2002 Posts: 18 Member | | Member Joined: Jan 2002 Posts: 18 | Thanks guys. I'm going with dual cylinder/power booster, drum/drum. Hopefully by the end of the year I can change to front discs. This engine is actually in a 55 Chevy car. This is the best site I know of to get good info on the 235 and since I'm only 28 I need all the help with this engine I can get. Thanks guys. | | |
#44078 01/16/2002 12:22 AM | Joined: Aug 2001 Posts: 21 Member | | Member Joined: Aug 2001 Posts: 21 | Hey Drifter, how's it going? Welcome to the site Drifter and abyars. My 50 3/4T has pb and it has a 235. My truck stops on a dime, and I mean that. You press down on the brakes and you just stop, you don't slide no matter what speed. Trust me, my first day driving the truck (235, org 4sp, org slow rearend) was exciting. It actually stops better than my mom's '98 Jimmy (but the stock tires suck anyways). My truck has new tires which really helps out. But it can be done no problem.
Nate
If you're clean, then you're not a 'Man' If your truck is clean, then your truck is a 'Queen'.
50 3/4T Chevy until it is traded or sold
48-55 1/2T Chevy parts until they're all gone
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#44079 01/17/2002 6:28 AM | Joined: Mar 2001 Posts: 22 Member | | Member Joined: Mar 2001 Posts: 22 | I just did power disc brakes on a 52 car with a 54 235. I have plenty of vacuum for the brakes. We put a larger tap for vacuum off the intake manifold. Don't know if that was necessary, but we really like the power disc brakes. The vacuum holds up good, even in stop and go at low idle. I thought the original brakes on my 52 car were crapola and scary. | | |
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