Putting disc brakes on a 70> - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BLAZERMAN · 12-08-2005, 12:30 AM

I may be getting a 70 K-10 that has the open knuckle drum brake front axle, what is involved in putting disc on it.

qksilver · 12-08-2005, 08:39 PM

depends on what is available in your area. It is easier to swap the whole axle but finding the same ratio might be a problem. I know the steering knuckle is different (caliper bracket), the brake lines and the rotor and hub. I am not sure on the spindle, wheel bearings, hubs and outer axle stubb.
A little bit of help but probably not enough. I have just swapped from the steering knuckle out complete or the whole axle.
Steve

BLAZERMAN · 12-08-2005, 11:29 PM

I was hoping to find the parts from a donor axle, the one I have has 3.73 gears and may be hard to find a good used one around here.
If I have to change the knuckles too I may just hold out for another axle.

nu2-72 · 12-09-2005, 10:29 AM

Rob, I still have the 3:73 Blazer axle here. Needs a complete rebuild though. I have it all torn apart but you are welcome to look at it and let me know if you want to tackle it. It is missing the lockouts. Did not have them when I got it.

12-08-2005, 12:30 AM	#1
BLAZERMAN Currently Blazerless Join Date: Apr 2000 Location: St. Joseph Mo. Posts: 4,828	Putting disc brakes on a 70> I may be getting a 70 K-10 that has the open knuckle drum brake front axle, what is involved in putting disc on it. __________________ 1972 C/30 133" W.B. C&C 1970 GMC 3500 157" W.B. single wheel C&C

12-08-2005, 08:39 PM	#2
qksilver Senior Member Join Date: Dec 2004 Location: Southern Pines NC Posts: 3,853	Re: Putting disc brakes on a 70> depends on what is available in your area. It is easier to swap the whole axle but finding the same ratio might be a problem. I know the steering knuckle is different (caliper bracket), the brake lines and the rotor and hub. I am not sure on the spindle, wheel bearings, hubs and outer axle stubb. A little bit of help but probably not enough. I have just swapped from the steering knuckle out complete or the whole axle. Steve

12-08-2005, 11:29 PM	#3
BLAZERMAN Currently Blazerless Join Date: Apr 2000 Location: St. Joseph Mo. Posts: 4,828	Re: Putting disc brakes on a 70> I was hoping to find the parts from a donor axle, the one I have has 3.73 gears and may be hard to find a good used one around here. If I have to change the knuckles too I may just hold out for another axle. __________________ 1972 C/30 133" W.B. C&C 1970 GMC 3500 157" W.B. single wheel C&C

12-09-2005, 10:29 AM	#4
nu2-72 Senior Member Join Date: Apr 2001 Location: Amazonia, Mo. USA Posts: 2,821	Re: Putting disc brakes on a 70> Rob, I still have the 3:73 Blazer axle here. Needs a complete rebuild though. I have it all torn apart but you are welcome to look at it and let me know if you want to tackle it. It is missing the lockouts. Did not have them when I got it. __________________ 72 3/4 4x4 350 4spd 72 3/4 4x4 350 auto 2004 Duramax Silverado 4x4 2006 Duramax Crew cab 4x4 2010 Harley Ultra Limited 2011 Harley Street Glide



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