1970 drum to disc questions (1/2 ton) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

67chevy1series · 03-11-2011, 12:21 AM

my dad has a 1970 1/2 ton 4wd lwb truck with the factory drums he is wanting to convert to disc and wants to know what he needs. any help you can give would be great! PICS WOULD REALLY HELP thanks everybody rick

CPNEJR · 03-12-2011, 02:17 AM

If you get a donor 71+ dana 44 you use the spindle out i believe, and i think you can use the knuckle out from a newer corp 10 bolt and axle shafts. Or just swap out the whole axle. Also you will need a new master and prop valve for the disk brakes.

67chevy1series · 03-12-2011, 02:27 AM

master and prop valve are different for 4wd right?

CPNEJR · 03-12-2011, 03:30 AM

Im not sure. Im sure someone else here knows for sure. I think They are they same for 4wd and 2wd just needs to be for disc.

03-11-2011, 12:21 AM	#1
67chevy1series Registered User Join Date: Mar 2010 Location: a t w a t e r cali 95301 Posts: 10,713	1970 drum to disc questions (1/2 ton) my dad has a 1970 1/2 ton 4wd lwb truck with the factory drums he is wanting to convert to disc and wants to know what he needs. any help you can give would be great! PICS WOULD REALLY HELP thanks everybody rick

03-12-2011, 02:17 AM	#2
CPNEJR Registered User Join Date: Sep 2003 Location: Franconia,N.H. Posts: 1,029	Re: 1970 drum to disc questions (1/2 ton) If you get a donor 71+ dana 44 you use the spindle out i believe, and i think you can use the knuckle out from a newer corp 10 bolt and axle shafts. Or just swap out the whole axle. Also you will need a new master and prop valve for the disk brakes. __________________ (Only) Member of the CPNE Fan Club Aint that the truth 67 C-10 350 with 3-speed tranny and 308 gears swb step 82 Z28 Camaro 355 small block over 350 hp and a borg warner super t-10 (blown engine) 72 Chevy K20 Suburban (future project) 70 Chevy K20 now 68 GMC K2500 2003 Chevy 2500hd ccsb 4X4 (daily driver) Last edited by CPNEJR; 03-12-2011 at 02:24 AM.

03-12-2011, 02:27 AM	#3
67chevy1series Registered User Join Date: Mar 2010 Location: a t w a t e r cali 95301 Posts: 10,713	Re: 1970 drum to disc questions (1/2 ton) master and prop valve are different for 4wd right?

03-12-2011, 03:30 AM	#4
CPNEJR Registered User Join Date: Sep 2003 Location: Franconia,N.H. Posts: 1,029	Re: 1970 drum to disc questions (1/2 ton) Im not sure. Im sure someone else here knows for sure. I think They are they same for 4wd and 2wd just needs to be for disc. __________________ (Only) Member of the CPNE Fan Club Aint that the truth 67 C-10 350 with 3-speed tranny and 308 gears swb step 82 Z28 Camaro 355 small block over 350 hp and a borg warner super t-10 (blown engine) 72 Chevy K20 Suburban (future project) 70 Chevy K20 now 68 GMC K2500 2003 Chevy 2500hd ccsb 4X4 (daily driver)



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