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10-21-2009, 10:44 PM | #1 |
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67 gmc non power brakes
ok i have a 67 gmc with no power brakes and i got the brackets for the booster but no booster from a 71 or 72 chevy. the question is what else do i need besides the booster to make it power brakes? thanks
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10-21-2009, 10:57 PM | #2 |
The Older Generation
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Re: 67 gmc non power brakes
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If you are going to keep the drum brakes you need a complete setup from a truck with power drum brakes, including the proportioning valve and rod that fastens to the brake pedal. LockDoc
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10-21-2009, 11:06 PM | #3 |
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Re: 67 gmc non power brakes
exactly^^^ your going to need a proportioning valve for power brakes (drum or disc) along with the rod from the back of the master
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10-22-2009, 08:47 PM | #4 |
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Re: 67 gmc non power brakes
There is no difference between and power or non-power combination valve/proportioning valve. The only difference is between disc and drum since the disc version does not need a residual valve for the front brakes. Discs in front don't need a residual valve. Drums need one. I converted to power on my all drum 68 C10 and used the existing valve. No issues. Just be sure you have all the linkage connecting the booster to the pedal.
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10-22-2009, 08:56 PM | #5 |
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Re: 67 gmc non power brakes
First two are wrong, mclairmo is right. You unbolt the existing master cylinder and brake line junction block from the firewall and bolt it onto the new booster. The lines will have enough flex in them to fit further from the firewall due to the booster. There is no change in master cylinder, lines, or anything else.
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10-22-2009, 10:04 PM | #6 | |
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Re: 67 gmc non power brakes
Quote:
LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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10-22-2009, 10:28 PM | #7 |
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Re: 67 gmc non power brakes
so if i get the power booster from the auto parts store it allready comes with the rod in it?
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10-22-2009, 10:37 PM | #8 |
Watch out for your cornhole !
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Re: 67 gmc non power brakes
No, you need the linkage and brackets too. On these trucks there is an intermediate bellcrank linkage and spacer brackets between the booster and firewall.
That stuff is only available new. You can find it on the parts board or send teeitup a message and see if he still has a bunch of them around.
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10-23-2009, 01:04 AM | #9 |
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Re: 67 gmc non power brakes
No, just the booster, no brackets, linkage, bellcrank, rod, etc. I bought a complete used booster off Ebay with all the brackets, linkage, bellcrank and rod included and replaced the junk booster with a rebuilt from Autozone for $99.
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10-23-2009, 03:04 AM | #10 |
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Re: 67 gmc non power brakes
Can we get a pic of this stuff? I'm pretty confused now that I dont have everything I need. (assuming 67 and 68 are the same)
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10-23-2009, 10:09 AM | #11 |
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Re: 67 gmc non power brakes
notice in this pic how far off the firewall it is,
this pic too,
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10-23-2009, 10:30 PM | #12 |
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Re: 67 gmc non power brakes
thank you. all you guys are good
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10-23-2009, 10:59 PM | #13 |
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Re: 67 gmc non power brakes
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Never try to teach a pig to sing; it wastes your time and annoys the pig! Gets More Chicks My lugnuts require more torque than your honda makes! 68 GMC, 4X4 conversion w/73 k20 running gear and springs, 350 4spd, 4.10's, D44 powerlok front, 14BFF govlock rear, 33" tires, lifted 4". |
10-23-2009, 11:33 PM | #14 |
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Re: 67 gmc non power brakes
If any of you either can't find the original boosters and brackets, or just want the booster closer to the firewall, let me know, I make a bracket for power brakes on the '67-'72's. A link to the for sale thread is in my sig.
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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