Disc brakes??????????'s - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Andy4639 · 01-02-2017, 05:37 PM

I am thinking about adding disc brakes to the front of the ramp truck.

Does anybody know if a later model truck disc brake system will work?

I ran across this on another forum and it's got me thinking!

Quote:

1967 c20 disc brake change

I'm 99% sure that any 1971-91 8 lug 2WD C series (1987-91 R series) disc spindle will bolt right up. As for disc brake master cylinder/booster/proporti oning valve; I'd go with a 1971-72 setup.

Any and all help would be appreciated.

wbc409 · 01-02-2017, 09:00 PM

From what I have found on this site, 71-87 C-20/30 would work. Most recommend swapping out the entire front cross member. I wouldn't mix and match brakes. I would use the master cylinder, proportioning valve that match the donor vehicle.

Andy4639 · 01-03-2017, 10:42 AM

Quote:

Originally Posted by wbc409

From what I have found on this site, 71-87 C-20/30 would work. Most recommend swapping out the entire front cross member. I wouldn't mix and match brakes. I would use the master cylinder, proportioning valve that match the donor vehicle.

Thanks that what I had plan to do is swap the whole front end over.

hugger6933 · 01-03-2017, 09:15 PM

Andy, That swap is just like the 1/2 ton stuff that has been swapped a ton of times from people coast to coast. It is just heavier trucks and heavier part but the idea is still the same. 73- 87 and up to 91 on some R and V series trucks [they didn't change body styles on the crew cab one ton and some dually trucks until 91.

Andy4639 · 01-03-2017, 09:34 PM

Quote:

Originally Posted by hugger6933

Andy, That swap is just like the 1/2 ton stuff that has been swapped a ton of times from people coast to coast. It is just heavier trucks and heavier part but the idea is still the same. 73- 87 and up to 91 on some R and V series trucks [they didn't change body styles on the crew cab one ton and some dually trucks until 91.

Cool. I'll start looking for the parts then.

Andy4639 · 03-04-2017, 07:33 PM

After driving the Ramp truck today to Greenville SC I think the disc brakes are going to have to happen and soon!

I spent all afternoon Thursday and all day Friday on the drums but it's just not stopping like it should. The wheel cylinders are both leaking now on the front. I may have to fix the wheel cylinders for now but disc brakes are going on it at some point.

Question for anyone who knows. Has anybody tried late model stuff on one of these. I'm talking 2000 model stuff?

01-02-2017, 09:00 PM	#2
wbc409 Registered User Join Date: Mar 2015 Location: st cloud mn Posts: 163	Re: Disc brakes??????????'s From what I have found on this site, 71-87 C-20/30 would work. Most recommend swapping out the entire front cross member. I wouldn't mix and match brakes. I would use the master cylinder, proportioning valve that match the donor vehicle.

01-03-2017, 09:15 PM	#4
hugger6933 Registered User Join Date: Oct 2008 Location: Marianna Arkansas Posts: 7,280	Re: Disc brakes??????????'s Andy, That swap is just like the 1/2 ton stuff that has been swapped a ton of times from people coast to coast. It is just heavier trucks and heavier part but the idea is still the same. 73- 87 and up to 91 on some R and V series trucks [they didn't change body styles on the crew cab one ton and some dually trucks until 91.

03-04-2017, 07:33 PM	#6
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Disc brakes??????????'s After driving the Ramp truck today to Greenville SC I think the disc brakes are going to have to happen and soon! I spent all afternoon Thursday and all day Friday on the drums but it's just not stopping like it should. The wheel cylinders are both leaking now on the front. I may have to fix the wheel cylinders for now but disc brakes are going on it at some point. Question for anyone who knows. Has anybody tried late model stuff on one of these. I'm talking 2000 model stuff? __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.



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