70 Front Disk Brake Conversion ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

aurorable · 04-16-2005, 10:45 AM

I have a complete front disk brake setup off a 71/72 1/2 ton 2wd and want to install it on my 70 GMC 1/2 ton. My question is, can I leave the existing upper and lower control arms, tie rods intact on my truck, and just bolt on the 72 spindles, calibers, etc. to them without any problems? I have the 6 lug setup on my truck now.

thanks, Steve

71HUGGER396 · 04-16-2005, 12:53 PM

NO you can not. I'm doing the same conversion now and the 71/72 spindles use different ball joints and different tie rod ends. I ended up buying drop spindles from GMCPAUL, these allow me to use all my stock 70 front end parts.I think the spindles were 229.00, but if I used the stock 71 spindle I had in my garage, I would have spent that much on ball joints and tie rods. And the spindles from GMCPAUL'S are stock or 21/2 " drop.

aurorable · 04-16-2005, 03:13 PM

Was just wondering about this as i haven't made up my mind yet on how I want to do this. The 71/72 setup I have is complete with tie rods and such. Was hoping to do as little swapping as possible. I'll look into GMCPaul for my spindle options.....

Thanks again, steve

neonlarry · 04-17-2005, 11:04 AM

How complete? You can just bolt in the whole front X-member if you have it.

71HUGGER396 · 04-17-2005, 11:51 AM

If you have the 71/72 tie rods, you would only have to change your ball joints, maybe only the lower one. If you call GMCPAULS I'm sure they would answer any questions you have. I also bought their 6 lug rotors, it came in a kit with calipers, pads, all the new bearings, and dust caps.

04-16-2005, 10:45 AM	#1
aurorable Registered User Join Date: Apr 2005 Location: Joppa, Maryland Posts: 12	70 Front Disk Brake Conversion ? I have a complete front disk brake setup off a 71/72 1/2 ton 2wd and want to install it on my 70 GMC 1/2 ton. My question is, can I leave the existing upper and lower control arms, tie rods intact on my truck, and just bolt on the 72 spindles, calibers, etc. to them without any problems? I have the 6 lug setup on my truck now. thanks, Steve Last edited by aurorable; 04-16-2005 at 10:48 AM.

04-17-2005, 11:04 AM	#4
neonlarry Registered User Join Date: Feb 2002 Location: Vacaville, CA Posts: 2,746	How complete? You can just bolt in the whole front X-member if you have it. __________________ 70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI

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04-16-2005, 12:53 PM	#2
71HUGGER396 Confirmed Truckaholic Join Date: Oct 2000 Location: Sarver,PA 16055 Posts: 732	NO you can not. I'm doing the same conversion now and the 71/72 spindles use different ball joints and different tie rod ends. I ended up buying drop spindles from GMCPAUL, these allow me to use all my stock 70 front end parts.I think the spindles were 229.00, but if I used the stock 71 spindle I had in my garage, I would have spent that much on ball joints and tie rods. And the spindles from GMCPAUL'S are stock or 21/2 " drop.

04-16-2005, 03:13 PM	#3
aurorable Registered User Join Date: Apr 2005 Location: Joppa, Maryland Posts: 12	Was just wondering about this as i haven't made up my mind yet on how I want to do this. The 71/72 setup I have is complete with tie rods and such. Was hoping to do as little swapping as possible. I'll look into GMCPaul for my spindle options..... Thanks again, steve

04-17-2005, 11:51 AM	#5
71HUGGER396 Confirmed Truckaholic Join Date: Oct 2000 Location: Sarver,PA 16055 Posts: 732	If you have the 71/72 tie rods, you would only have to change your ball joints, maybe only the lower one. If you call GMCPAULS I'm sure they would answer any questions you have. I also bought their 6 lug rotors, it came in a kit with calipers, pads, all the new bearings, and dust caps.



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