Power brake conversion questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dubie · 10-08-2002, 12:53 PM

Are all power brake boosters from 67-72 the same? I found 2 of them in the local yard , one is from a 72 Suburban and the other from a 71 GMC 3/4 ton. Will these booster work in my 72 Chevy? Will I also need to get the brake lines off them? can I use my own calipers or do I need to get those to? Any help you guys can offer is always much appreciated.
This is a total conversion , from manual brakes to power.

jmil1974 · 10-08-2002, 01:27 PM

The boosters are the same if they are from the same model (C10, C20, etc.). They should all fit any 67-72 body style, regardless. Make sure you get ALL the brackets, the rod to the pedal, ALL the lines you can and don't bend, strip, or kink them, and the proportioning valve and master cylinder (though you'll likely get a new master anyway). Use a brake line wrench and get all the lines you can. I'm in brake line hell right now. The more complete and intact the setup, the better off you'll be. Boosters rarely go bad and valves even more rarely so not to worry. Did I mention to get the lines?

Good luck!

dubie · 10-08-2002, 02:30 PM

Looks like it will be a 72 burb that I will be robbing the parts from. I hope they will all fit on my C/10.

BrianStep72 · 10-08-2002, 03:55 PM

I just completed this upgrade. The KEY part is the bracket for bolting this onto the firewall. I simply pulled the master cylinder away from the firewall and inserted this booster & bracket in the middle. After a few (several) adjustments to the pedal setup under the dash , my baby is stopping on a dime.

The only problem I have is when I first start out in the morning the brakes are kind of tight (grabbing quickly). BUT as i brake 3 or 4 times leaving my neighborhood they get better and end up getting to a "normal" pedal on a truck.

I don't know what the situation is with that, but OTHERWISE this was a pretty easy upgrade all things considered.

Brian

10-08-2002, 12:53 PM	#1
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,855	Power brake conversion questions Are all power brake boosters from 67-72 the same? I found 2 of them in the local yard , one is from a 72 Suburban and the other from a 71 GMC 3/4 ton. Will these booster work in my 72 Chevy? Will I also need to get the brake lines off them? can I use my own calipers or do I need to get those to? Any help you guys can offer is always much appreciated. This is a total conversion , from manual brakes to power. __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

10-08-2002, 01:27 PM	#2
jmil1974 Ain't we cute? Join Date: May 2002 Location: Friendswood, TX Posts: 700	The boosters are the same if they are from the same model (C10, C20, etc.). They should all fit any 67-72 body style, regardless. Make sure you get ALL the brackets, the rod to the pedal, ALL the lines you can and don't bend, strip, or kink them, and the proportioning valve and master cylinder (though you'll likely get a new master anyway). Use a brake line wrench and get all the lines you can. I'm in brake line hell right now. The more complete and intact the setup, the better off you'll be. Boosters rarely go bad and valves even more rarely so not to worry. Did I mention to get the lines? Good luck! __________________ 69 C10 2WD LWB Fleet 350/350 power front disc conversion (6 lug disc kit from gmcpauls) and new engine, PS, A/C, fresh fluids, SHE DRIVES! FOR SALE $3900

10-08-2002, 02:30 PM	#3
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,855	Looks like it will be a 72 burb that I will be robbing the parts from. I hope they will all fit on my C/10. __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

10-08-2002, 03:55 PM	#4
BrianStep72 Registered User Join Date: Sep 2000 Location: Maryville, TN Posts: 163	I just completed this upgrade. The KEY part is the bracket for bolting this onto the firewall. I simply pulled the master cylinder away from the firewall and inserted this booster & bracket in the middle. After a few (several) adjustments to the pedal setup under the dash , my baby is stopping on a dime. The only problem I have is when I first start out in the morning the brakes are kind of tight (grabbing quickly). BUT as i brake 3 or 4 times leaving my neighborhood they get better and end up getting to a "normal" pedal on a truck. I don't know what the situation is with that, but OTHERWISE this was a pretty easy upgrade all things considered. Brian __________________ 1941 Chevy Coupe Streetrod 1964 Chevy Nova SS 1964 Chevy C10 Stepside Pickup 1972 Chevy C10 Stepside Pickup 1987 Chevy IROC Z28 Camaro 1LE+TPI - racecar 2004 Chevy Tahoe 2013 Chevy Silverado Tow Rig -------------------------------------- http://www.bowtieracing.org



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