Dana 70HD Disc Conversion Question. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Slidewayz_James · 03-10-2015, 01:45 AM

Hey guys, so I've been poking around on here and just cant seam to find any real info.
I have a 83 Crew cab diesel dually I plan on using for towing. Would like to do a disc conversion in there rear. Found the Diy4x.com Adapter plates http://diy4x.com/cart/index.php?rout...product_id=149 And after poking around on here I found the proper rotors to use. Looks like a 03 Express van rear/ 05 Chevy Dually rear rotor *they happen to be the same part number*. Then use a late 70s Chevy 3/4 ton Front for the Caliper.
My main question, I have seen people say dont use this set up for towing as they dont think the brackets are strong enough. But no one seams to have any sort of evidence its just opinions. Do anyone know someone or seen trucks that run this set up and have good or bad results? I know they seam well made and Ive always been impressed with Diy4x stuff they make.
It all seams very doable just dont want to endanger myself or others in the long run.

ZacharyDouglas1992 · 03-10-2015, 04:43 AM

I'm looking forward to some info on this subject. I'd love discs on my 83 dually!

andrewmp6 · 03-10-2015, 12:44 PM

These are thicker http://www.ruffstuffspecialties.com/...0DISC-CHE.html but if im reading it right its for not running duallies.

83GMCK2500 · 03-11-2015, 10:32 AM

Don't forget TSM Mfg. Single caliper kit. Dual caliper kit. I do not know how thick their brackets are but I have seen one of their kits in person (different application) and it was very nice looking. Might be worth contacting them.

slotard · 03-11-2015, 11:15 PM

I haven't done much research, but I sure wish there was a cheap 14FF disc conversion that had a parking brake. The drums sure are heavy. From what I'm seeing many of the disc kits fit both the 70 and the 14FF.

meatwagon83 · 03-12-2015, 05:58 PM

i plan on doing it on mine as well, arent they made from 3/8 plate? why wouldnt that be strong enough? and why would you do it if you couldnt pull with it?

Desert1957 · 03-13-2015, 09:28 AM

Have they come out with a "Disc Brake" setup that has a parking brake yet? I have a stick shift in my Dually and don't want to give up the parking brake feature.

Desert

83GMCK2500 · 03-13-2015, 10:28 AM

The link I posted, TSM, they offer calipers with parking brake.

Desert1957 · 03-13-2015, 10:38 AM

Quote:

Originally Posted by 83GMCK2500

The link I posted, TSM, they offer calipers with parking brake.

Thanks, didn't see it on the first look. Little pricey, but ease of maintenance probably makes it worth every penny spent.

My situation here in Pa. the truck has to be inspected every year which means hub removal and chances of nicking a seal are great. After this conversion just wheel removal.

Desert

jjmorrse · 03-13-2015, 10:21 PM

I would be interested in hearing how rear discs hold up towing, if that is in the cards.

03-10-2015, 01:45 AM	#1
Slidewayz_James Registered User Join Date: Feb 2015 Location: Sacramento Posts: 8	Dana 70HD Disc Conversion Question. Hey guys, so I've been poking around on here and just cant seam to find any real info. I have a 83 Crew cab diesel dually I plan on using for towing. Would like to do a disc conversion in there rear. Found the Diy4x.com Adapter plates http://diy4x.com/cart/index.php?rout...product_id=149 And after poking around on here I found the proper rotors to use. Looks like a 03 Express van rear/ 05 Chevy Dually rear rotor they happen to be the same part number. Then use a late 70s Chevy 3/4 ton Front for the Caliper. My main question, I have seen people say dont use this set up for towing as they dont think the brackets are strong enough. But no one seams to have any sort of evidence its just opinions. Do anyone know someone or seen trucks that run this set up and have good or bad results? I know they seam well made and Ive always been impressed with Diy4x stuff they make. It all seams very doable just dont want to endanger myself or others in the long run. __________________ *James* 98 Silverado 83 GMC Sierra Crew cab dually Diesel

03-10-2015, 04:43 AM	#2
ZacharyDouglas1992 Registered User Join Date: Nov 2013 Location: Fowler California Posts: 140	Re: Dana 70HD Disc Conversion Question. I'm looking forward to some info on this subject. I'd love discs on my 83 dually! __________________ 1967 CHEVELLE MALIBU 427/700R4 1971 CHEYENNE 10 350/350 1983 GMC K3500 454/400/205 1987 R10 TBI 350/700R4 2014 CRUZE 2.0 TURBO DIESEL

03-10-2015, 12:44 PM	#3
andrewmp6 Registered User Join Date: Jan 2009 Location: Louisville,Ky Posts: 5,811	Re: Dana 70HD Disc Conversion Question. These are thicker http://www.ruffstuffspecialties.com/...0DISC-CHE.html but if im reading it right its for not running duallies.

03-11-2015, 10:32 AM	#4
83GMCK2500 Registered User Join Date: Sep 2009 Location: Beaverton, OR from WA State Posts: 1,515	Re: Dana 70HD Disc Conversion Question. Don't forget TSM Mfg. Single caliper kit. Dual caliper kit. I do not know how thick their brackets are but I have seen one of their kits in person (different application) and it was very nice looking. Might be worth contacting them. __________________ Devin 1983 GMC High Sierra 2500, 4x4, RC/LB, 400 S.B., SM-465, NP-208, Corporate 10 bolt & 9.5" 14 bolt 1996 GMC Sierra SLE 3500 DRW, 4x4, EC/LB, Vortec 454, NV-4500, BW-4401, AAM 925 & AAM 1050 1997 GMC Sierra SLT 1500 4x4, Z71/F44, EC/SB, Vortec 350 My Introduction with my '83s History New Daily, the '96

03-11-2015, 11:15 PM	#5
slotard Registered User Join Date: Nov 2014 Location: Alameda, CA Posts: 877	Re: Dana 70HD Disc Conversion Question. I haven't done much research, but I sure wish there was a cheap 14FF disc conversion that had a parking brake. The drums sure are heavy. From what I'm seeing many of the disc kits fit both the 70 and the 14FF. __________________ 1973 C20, 350/350

03-12-2015, 05:58 PM	#6
meatwagon83 Registered User Join Date: Dec 2012 Location: Preble county ohio Posts: 1,914	Re: Dana 70HD Disc Conversion Question. i plan on doing it on mine as well, arent they made from 3/8 plate? why wouldnt that be strong enough? and why would you do it if you couldnt pull with it? __________________ "DON'T TOUCH THE TRIM!!"-Early Kyler

03-13-2015, 09:28 AM	#7
Desert1957 Registered User Join Date: Apr 2009 Location: New Freedom Pa. Posts: 1,335	Re: Dana 70HD Disc Conversion Question. Have they come out with a "Disc Brake" setup that has a parking brake yet? I have a stick shift in my Dually and don't want to give up the parking brake feature. Desert

03-13-2015, 10:28 AM	#8
83GMCK2500 Registered User Join Date: Sep 2009 Location: Beaverton, OR from WA State Posts: 1,515	Re: Dana 70HD Disc Conversion Question. The link I posted, TSM, they offer calipers with parking brake. __________________ Devin 1983 GMC High Sierra 2500, 4x4, RC/LB, 400 S.B., SM-465, NP-208, Corporate 10 bolt & 9.5" 14 bolt 1996 GMC Sierra SLE 3500 DRW, 4x4, EC/LB, Vortec 454, NV-4500, BW-4401, AAM 925 & AAM 1050 1997 GMC Sierra SLT 1500 4x4, Z71/F44, EC/SB, Vortec 350 My Introduction with my '83s History New Daily, the '96

03-13-2015, 10:21 PM	#10
jjmorrse Registered User Join Date: Aug 2010 Location: east tx Posts: 128	Re: Dana 70HD Disc Conversion Question. I would be interested in hearing how rear discs hold up towing, if that is in the cards. __________________ jjmorrse 86 C30 crewcab big dooley. 454- 400



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