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

77c10 · 08-29-2011, 09:30 AM

New to the website, I love it so far.

I have a 77 C10 2wd that did not come with power brakes from the factory. Picked up a booster and master cylinder from a guy parting out a 78. I bolted it on yesterday and the only problem I ran into was I had to swap the brake lines going into the master cylinder. In other words the front one on my old non-power master clyinder is now going to the rear of the new power brake master cylinder and vice versa. My question is, will this affect the braking?

Thanks

notyo_cheez · 08-29-2011, 06:17 PM

Shouldn't be an issue. Safer route would be getting new lines, a flaring tool and a tubing bender and cutter and make new ones to fit but that's just what I'd do.

406 Q-ship · 08-30-2011, 03:00 AM

Match it too the way the 78 master cylinder was, bending line as needed. DO NOT reverse the lines. The fitting sizes should be different front and rear anyway.

77c10 · 08-30-2011, 10:55 AM

Quote:

Originally Posted by 406 Q-ship

Match it too the way the 78 master cylinder was, bending line as needed. DO NOT reverse the lines. The fitting sizes should be different front and rear anyway.

I can not tell how the 78 was plumbed, the unit was pulled from the truck before I got there. What was my orginal rear line will only thread into the front port of the newer m/c and what was my original front line will only thread into the rear port.

kris's66lwb · 08-30-2011, 11:20 AM

They are diff sizes just bend them to the correct postions do not kink them and do not reverse them some times there the same size if reversed your drums will actuate b4 the disks will and braking will be eraddic

08-29-2011, 09:30 AM	#1
77c10 Registered User Join Date: Aug 2011 Location: Gallatin, TN Posts: 782	Power brake conversion question New to the website, I love it so far. I have a 77 C10 2wd that did not come with power brakes from the factory. Picked up a booster and master cylinder from a guy parting out a 78. I bolted it on yesterday and the only problem I ran into was I had to swap the brake lines going into the master cylinder. In other words the front one on my old non-power master clyinder is now going to the rear of the new power brake master cylinder and vice versa. My question is, will this affect the braking? Thanks

08-29-2011, 06:17 PM	#2
notyo_cheez Registered User Join Date: Apr 2011 Location: corpus christi, tx - america's fattest city Posts: 253	Re: Power brake conversion question Shouldn't be an issue. Safer route would be getting new lines, a flaring tool and a tubing bender and cutter and make new ones to fit but that's just what I'd do.

08-30-2011, 03:00 AM	#3
406 Q-ship Registered User Join Date: Oct 2010 Location: Largo Florida Posts: 632	Re: Power brake conversion question Match it too the way the 78 master cylinder was, bending line as needed. DO NOT reverse the lines. The fitting sizes should be different front and rear anyway. __________________ Lifes journey is not to arrive at the gate well preserved, it is to slide in sideways all used up and wore out yelling.....God what'a ride! Where patience fails, force prevails Stapp's Ironical Paradox "The universal aptitude for ineptitude makes any human accomplishment an incredible miracle."

08-30-2011, 11:20 AM	#5
kris's66lwb resident wrencher Join Date: Dec 2006 Location: ramona california Posts: 720	Re: Power brake conversion question They are diff sizes just bend them to the correct postions do not kink them and do not reverse them some times there the same size if reversed your drums will actuate b4 the disks will and braking will be eraddic



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