Disc Brake Swap Booster Info. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

harleyx2 · 05-10-2007, 07:29 PM

IM SWAPPING THE CROSSMEMBER AND DISC BRAKES FROM A 1980 MODEL ONTO MY 68. CAN I USE THE 68 POWER DRUM BOOSTER WITH THE 1980 MASTER CYLINDER AND BRAKE LINES OR DO I NEED TO USE THE 1980 BOOSTER? IF I USE THE 80 MODEL BOOSTER WILL IT INTERFEAR WITH MY SHIFTER LINKAGE? THANKS. sorry for all the caps

harleyx2 · 05-10-2007, 10:01 PM

has anyone done this?

dave2953 · 05-10-2007, 10:20 PM

Not sure if you can use the factory booster, but you can use the 80 booster and modify the brackets. I posted a thread on this subject earlier today. Here is a link for a great idea to make the brackets work with no shifter linkage clearance issues:

http://67-72chevytrucks.com/vboard/s...d.php?t=238199

harleyx2 · 05-11-2007, 07:14 AM

yes i saw your write up with the brackets. thats a good idea but i wondered if anyone has done it without the brackets.

faribran · 05-11-2007, 11:18 AM

Dave,
Very good.. i have been wanting to do something like this.. i have a donar 84 truck...

ill have to look close at your thread.. thanks for sharing.

rlm316 · 05-11-2007, 11:35 AM

I am doing the same swap. My plan is to use the original booster from my '70 and upgrade with the disc/drum master cylinder and dist. valve for a 71-72. I have installed the front brake lines for the 71-72 disc brakes. Only a small ammount of modification needed to bring the lines through the frame rails.
Good luck, Lane

**70C10Toejam** · 05-11-2007, 06:13 PM

harley...here is one where they modified the brackets to fit the firewall, but it WILL interfere with the shift linkage on the automatic.

was sitting under the hood of my truck trying to fit it, and knocked it outta park.

http://67-72chevytrucks.com/vboard/s...d.php?t=215980

dave2953 · 05-11-2007, 06:51 PM

I tried it without the brackets once before. I slotted all the holes in the original booster bracket. This made it adjustable and solved the clearance problem mentioned earlier. It was a real PITA and looked pretty crude since I don't have a shop, but it was functional. I think drilling the holes like they did in the other thread mentioned would be better if you don't want to use the channel like ToeJam did.

05-10-2007, 07:29 PM	#1
harleyx2 Registered User Join Date: Apr 2007 Location: canton ga Posts: 49	Disc Brake Swap Booster Info. IM SWAPPING THE CROSSMEMBER AND DISC BRAKES FROM A 1980 MODEL ONTO MY 68. CAN I USE THE 68 POWER DRUM BOOSTER WITH THE 1980 MASTER CYLINDER AND BRAKE LINES OR DO I NEED TO USE THE 1980 BOOSTER? IF I USE THE 80 MODEL BOOSTER WILL IT INTERFEAR WITH MY SHIFTER LINKAGE? THANKS. sorry for all the caps

05-10-2007, 10:01 PM	#2
harleyx2 Registered User Join Date: Apr 2007 Location: canton ga Posts: 49	Re: Disc Brake Swap Booster Info. has anyone done this?

05-10-2007, 10:20 PM	#3
dave2953 Dave's not here, man Join Date: Jun 2004 Location: Winder, Georgia Posts: 2,000	Re: Disc Brake Swap Booster Info. Not sure if you can use the factory booster, but you can use the 80 booster and modify the brackets. I posted a thread on this subject earlier today. Here is a link for a great idea to make the brackets work with no shifter linkage clearance issues: http://67-72chevytrucks.com/vboard/s...d.php?t=238199 __________________ - 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250

05-11-2007, 07:14 AM	#4
harleyx2 Registered User Join Date: Apr 2007 Location: canton ga Posts: 49	Re: Disc Brake Swap Booster Info. yes i saw your write up with the brackets. thats a good idea but i wondered if anyone has done it without the brackets.

05-11-2007, 11:18 AM	#5
faribran Registered User Join Date: Jul 2005 Location: AL Posts: 1,828	Re: Disc Brake Swap Booster Info. Dave, Very good.. i have been wanting to do something like this.. i have a donar 84 truck... ill have to look close at your thread.. thanks for sharing. __________________ "

05-11-2007, 11:35 AM	#6
rlm316 Registered User Join Date: Aug 2006 Location: Woodstown, NJ Posts: 669	Re: Disc Brake Swap Booster Info. I am doing the same swap. My plan is to use the original booster from my '70 and upgrade with the disc/drum master cylinder and dist. valve for a 71-72. I have installed the front brake lines for the 71-72 disc brakes. Only a small ammount of modification needed to bring the lines through the frame rails. Good luck, Lane

05-11-2007, 06:13 PM	#7
70C10Toejam Hellasick Join Date: Jul 2006 Location: Death Moans, IA Posts: 876	Re: Disc Brake Swap Booster Info. harley...here is one where they modified the brackets to fit the firewall, but it WILL interfere with the shift linkage on the automatic. was sitting under the hood of my truck trying to fit it, and knocked it outta park. http://67-72chevytrucks.com/vboard/s...d.php?t=215980 __________________ I keep two MAGNUMS in my desk. One's a gun, and I keep it loaded. The other's a bottle and it keeps ME loaded. I'm Tracer Bullet. (Calvin and Hobbes) This life was a test. It was only a test. If this had been an actual life, you would have received instructions on where to go and what to do. RED meat is not bad for you...FUZZY BLUE/GREEN MEAT is bad for you!!!!!!!!!!!!! BUILT FORD TOUGH WITH CHEVY STUFF--sticker at Goodguys

05-11-2007, 06:51 PM	#8
dave2953 Dave's not here, man Join Date: Jun 2004 Location: Winder, Georgia Posts: 2,000	Re: Disc Brake Swap Booster Info. I tried it without the brackets once before. I slotted all the holes in the original booster bracket. This made it adjustable and solved the clearance problem mentioned earlier. It was a real PITA and looked pretty crude since I don't have a shop, but it was functional. I think drilling the holes like they did in the other thread mentioned would be better if you don't want to use the channel like ToeJam did. __________________ - 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250 Last edited by dave2953; 05-11-2007 at 06:52 PM.



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