Help identifying disk brakes - The 1947 - Present Chevrolet & GMC Truck Message Board Network

KAILUAZ · 11-10-2006, 02:17 PM

The PO had put disks up front on my 70 2500 GMC. Anyone have an idea of what these might have come off of? Thanks.

Bob Moore · 11-10-2006, 09:02 PM

I don't know if there is a diference between 71/72 brakes and 73-87 brakes but I would guess not. I have 82 3/4T Suburban front brakes on my 67 Chev 3/4T.

Those look an awful lot like those on mine.

What do need to know or replace? Head to the auto parts store and ask the application of the parts you need. They should be able to tell you the years that they fit.

jamon8 · 11-14-2006, 10:28 AM

those brakes look just like the 84 c-10 with the jb5 package I put on my truck

measure the rotor, that will tell you alot

**uncle** · 11-14-2006, 01:30 PM

it still has a drum brake proportioning valve.

KAILUAZ · 11-27-2006, 09:59 PM

Quote:

Originally Posted by uncle

it still has a drum brake proportioning valve.

Can I Just add an aftermarket prop valve? The truck seems to stop fine and it already has the break booster.

jamon8 · 11-28-2006, 08:54 AM

you will need the master cylinder from a disc brake truck also

the rear tub on the master is much larger for the disk brakes

11-10-2006, 02:17 PM	#1
KAILUAZ King of Rust Join Date: Jul 2005 Location: St Petersburg, FL Posts: 359	Help identifying disk brakes The PO had put disks up front on my 70 2500 GMC. Anyone have an idea of what these might have come off of? Thanks. __________________ 1970 GMC 2500, 350, TH400, front disks, thats it! My Pics

11-10-2006, 09:02 PM	#2
Bob Moore Registered User Join Date: Feb 2004 Location: Tacoma WA Posts: 1,365	Re: Help identifying disk breaks I don't know if there is a diference between 71/72 brakes and 73-87 brakes but I would guess not. I have 82 3/4T Suburban front brakes on my 67 Chev 3/4T. Those look an awful lot like those on mine. What do need to know or replace? Head to the auto parts store and ask the application of the parts you need. They should be able to tell you the years that they fit. __________________ 67 C-20 LWB, tilt, speed alert, vac, 454, T400 67 C-10 SWB, factory air with more to follow

11-14-2006, 10:28 AM	#3
jamon8 Registered User Join Date: Apr 2006 Location: southern Il Posts: 335	Re: Help identifying disk brakes those brakes look just like the 84 c-10 with the jb5 package I put on my truck measure the rotor, that will tell you alot

11-14-2006, 01:30 PM	#4
uncle Senior Member Join Date: Aug 2003 Location: Conyers,Ga. Posts: 7,288	Re: Help identifying disk brakes it still has a drum brake proportioning valve.

11-28-2006, 08:54 AM	#6
jamon8 Registered User Join Date: Apr 2006 Location: southern Il Posts: 335	Re: Help identifying disk brakes you will need the master cylinder from a disc brake truck also the rear tub on the master is much larger for the disk brakes



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