Please help with Connecting Disc Brake Fluid Lines - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Billy G · 05-04-2005, 09:16 PM

In my conversion to disc on my 70 GMC...Im using the brake lines and prop valve off a 76 P/U. Im curious where most of you that have done this have mounted your prop valve....on the brace in front of the X member like the 76?....or did you retube your lines and mount it near the Master Cylinder?

I know the brake line *elect* will have to be extended to the front...that's no problem. Just want to go the most efficient route.

Also...which master cylinder did you use??? I dont have vacumn boost...so it's just bolted to the firewall. The 76 I bought parts off had it the same way.
I guess Im asking if the 76 master cylinder (new) will work.

I GREATLY appreciate any and all comments....answers...thoughts...

Billy G

Billy G · 05-05-2005, 05:27 AM

ttt

Billy G · 05-05-2005, 07:24 PM

I would search for this if it were available....if anyone can help....I would surely appreciate it

Billy G

midyearvet@aol. · 05-05-2005, 07:40 PM

You can buy adaptor fittings at most parts houses. Female inverted flare to male inverted flare. A better way is to go to a junk yard & get the fittings off of a GM vehicle that have a hole in the fitting the size line you want to run & the size thread on the fitting for what you want to screw it into.
Later GM brake lines had different size fittings on each end so the guys on the assembly line could only put them on one way. (The right way) You will then need to cut the flare off of your brake line install new fitting & then re-double flare. Or just make an all new line.

Rick Ca.

05-04-2005, 09:16 PM	#1
Billy G Registered User Join Date: May 2003 Location: Dayton, Tx (in Old River) Posts: 286	Please help with Connecting Disc Brake Fluid Lines In my conversion to disc on my 70 GMC...Im using the brake lines and prop valve off a 76 P/U. Im curious where most of you that have done this have mounted your prop valve....on the brace in front of the X member like the 76?....or did you retube your lines and mount it near the Master Cylinder? I know the brake line elect will have to be extended to the front...that's no problem. Just want to go the most efficient route. Also...which master cylinder did you use??? I dont have vacumn boost...so it's just bolted to the firewall. The 76 I bought parts off had it the same way. I guess Im asking if the 76 master cylinder (new) will work. I GREATLY appreciate any and all comments....answers...thoughts... Billy G __________________ My FAMOUS LAST WORDS...."Ima Gonna!!" - 1970 GMC 1500 swb/step 250 I-6 3 spd - "The GEM" - 1976 Chev Scotsdale swb/step 350/350 - "The JEWEL" - 1982 Chev C-10 swb/step 250 I-6 3 spd - - 2001 Chev Silverado LT -

05-05-2005, 05:27 AM	#2
Billy G Registered User Join Date: May 2003 Location: Dayton, Tx (in Old River) Posts: 286	ttt __________________ My FAMOUS LAST WORDS...."Ima Gonna!!" - 1970 GMC 1500 swb/step 250 I-6 3 spd - "The GEM" - 1976 Chev Scotsdale swb/step 350/350 - "The JEWEL" - 1982 Chev C-10 swb/step 250 I-6 3 spd - - 2001 Chev Silverado LT -

05-05-2005, 07:24 PM	#3
Billy G Registered User Join Date: May 2003 Location: Dayton, Tx (in Old River) Posts: 286	I would search for this if it were available....if anyone can help....I would surely appreciate it Billy G __________________ My FAMOUS LAST WORDS...."Ima Gonna!!" - 1970 GMC 1500 swb/step 250 I-6 3 spd - "The GEM" - 1976 Chev Scotsdale swb/step 350/350 - "The JEWEL" - 1982 Chev C-10 swb/step 250 I-6 3 spd - - 2001 Chev Silverado LT -

05-05-2005, 07:40 PM	#4
midyearvet@aol. Registered User Join Date: Jun 2003 Location: Napa, Ca. Posts: 103	Brake lines You can buy adaptor fittings at most parts houses. Female inverted flare to male inverted flare. A better way is to go to a junk yard & get the fittings off of a GM vehicle that have a hole in the fitting the size line you want to run & the size thread on the fitting for what you want to screw it into. Later GM brake lines had different size fittings on each end so the guys on the assembly line could only put them on one way. (The right way) You will then need to cut the flare off of your brake line install new fitting & then re-double flare. Or just make an all new line. Rick Ca.



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