another question on disc brakes - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gmc67swb · 06-06-2008, 06:24 PM

Swapping over to disc on the front,The question i have is,on my 67 gmc truck can i use the upper and lower control arms on the truck are do they need to be replaced? The reason i ask is all ball joints and bushing are only 2 years old. I Have a 72 front disc set up as the replacement. I figured if i could swap spindals for now then build up the other arms for the future. Any help on this is appreciated.....thanks

powell72 · 06-06-2008, 06:30 PM

Sorry, but disc brake (71/72) spindles have different ball joints then 70 and older drum trucks.

gmc67swb · 06-06-2008, 06:46 PM

So if i swap ball joints then can i use the orginal control arms?

70rs/ss · 06-06-2008, 06:49 PM

Yep, 67 A-arms and 72 spindles with the right ball joints. I am not sure, but the upper might be the same, but lower is for sure different.

arkracing · 06-06-2008, 07:21 PM

The steering stop on the lower is differant - you would have to modify it to work properly.

Super-Dave · 06-06-2008, 07:59 PM

I just did mine with 88 3/4 ton gear and used 73 upper and lower ball joints on my 68 arms. also had to use the 88 steering parts.

myoldchevytruck · 06-06-2008, 11:55 PM

Super-Dave,

Is your truck parked at Vandenberg?

gmc67swb · 06-07-2008, 07:14 AM

I have all the linkage off the 72 so if i swap it i should be good to go (right)and thanks for all the input,you guys and this form are great seems like i always find someone out there that knows what to do. again thanks ......

powell72 · 06-07-2008, 10:45 AM

If all the parts off the 72 are in good condition I'd just swap all the 72 stuff over to yours.

ChevyDude · 06-08-2008, 01:09 AM

Thats what I did on my 68'. Found a complete 71' front crossmember...cleaned it all up and bolted it to my 68' frame, disc brakes.

06-06-2008, 06:24 PM	#1
gmc67swb Registered User Join Date: Feb 2003 Location: Mesquite, Tx Posts: 396	another question on disc brakes Swapping over to disc on the front,The question i have is,on my 67 gmc truck can i use the upper and lower control arms on the truck are do they need to be replaced? The reason i ask is all ball joints and bushing are only 2 years old. I Have a 72 front disc set up as the replacement. I figured if i could swap spindals for now then build up the other arms for the future. Any help on this is appreciated.....thanks __________________ GM 330HP/350, Magnuson 122HH, Tremec TKO 5spd

06-06-2008, 06:30 PM	#2
powell72 Senior Member Join Date: Jan 2005 Location: Loveland Co. Posts: 3,098	Re: another question on disc brakes Sorry, but disc brake (71/72) spindles have different ball joints then 70 and older drum trucks. __________________ Chris 74 Custom Deluxe SWB 350/350/3.73’s 99 2wd Silverado RCSB 5.3/4L60/3.90’s http://www.classictrucks.com/feature...short_bed.html

06-06-2008, 06:46 PM	#3
gmc67swb Registered User Join Date: Feb 2003 Location: Mesquite, Tx Posts: 396	Re: another question on disc brakes So if i swap ball joints then can i use the orginal control arms? __________________ GM 330HP/350, Magnuson 122HH, Tremec TKO 5spd

06-06-2008, 06:49 PM	#4
70rs/ss Registered User Join Date: Dec 2004 Location: Northern AZ Posts: 7,270	Re: another question on disc brakes Yep, 67 A-arms and 72 spindles with the right ball joints. I am not sure, but the upper might be the same, but lower is for sure different.

06-06-2008, 07:21 PM	#5
arkracing Weekend Warrior Join Date: Oct 2004 Location: CT Posts: 1,787	Re: another question on disc brakes The steering stop on the lower is differant - you would have to modify it to work properly. __________________ -'07 GMC Sierra K2500HD -'66 C10 Suburban -'68/'71 K20 Service Bed Project -'69 Chevy C30 Mason Dump -'33Ford P/U 396ChevyPowered

06-06-2008, 07:59 PM	#6
Super-Dave Registered User Join Date: Sep 2006 Location: Lompoc, Ca Posts: 128	Re: another question on disc brakes I just did mine with 88 3/4 ton gear and used 73 upper and lower ball joints on my 68 arms. also had to use the 88 steering parts.

06-06-2008, 11:55 PM	#7
myoldchevytruck Retired Air Force Veteran Join Date: Aug 2007 Location: Pembroke Pines, Florida 33024 Posts: 1,808	Re: another question on disc brakes Super-Dave, Is your truck parked at Vandenberg? __________________ Harry 69' SWB Step Side 1/2 Ton w/68' Front Clip Swap from Leafs to Trailing Arms (Complete) Swap 6 Lug to 5 Lug (w/ Disk Brakes in Front) 3/6 Drop Help Support The Board Click Here For Information On How To Subscribe Krue's FAQ Page Vendors

06-07-2008, 07:14 AM	#8
gmc67swb Registered User Join Date: Feb 2003 Location: Mesquite, Tx Posts: 396	Re: another question on disc brakes I have all the linkage off the 72 so if i swap it i should be good to go (right)and thanks for all the input,you guys and this form are great seems like i always find someone out there that knows what to do. again thanks ...... __________________ GM 330HP/350, Magnuson 122HH, Tremec TKO 5spd Last edited by gmc67swb; 06-07-2008 at 07:15 AM.

06-07-2008, 10:45 AM	#9
powell72 Senior Member Join Date: Jan 2005 Location: Loveland Co. Posts: 3,098	Re: another question on disc brakes If all the parts off the 72 are in good condition I'd just swap all the 72 stuff over to yours. __________________ Chris 74 Custom Deluxe SWB 350/350/3.73’s 99 2wd Silverado RCSB 5.3/4L60/3.90’s http://www.classictrucks.com/feature...short_bed.html

06-08-2008, 01:09 AM	#10
ChevyDude Senior Member Join Date: Jun 2003 Location: Westminster, CO Posts: 3,071	Re: another question on disc brakes Thats what I did on my 68'. Found a complete 71' front crossmember...cleaned it all up and bolted it to my 68' frame, disc brakes. __________________ Alex 1971 Lil' Red 350 SBC 700R4

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