rear brake swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*60apache4* · 09-14-2002, 06:39 PM

I have a 71 3/4 ton 4x4, with what I believe is an eaton rear diff (round pumpkin), and I it has a unique brake drum size of 11" x 1-3/4". No parts are listed in any books for this brake drum & shoe.

So, I was wondering if I could just swap in the backing plate from a Dana 60 to get the more common 12" x 2" brakes; cheaper and better brakes.

Your thoughts & ideas appreciated, short of swapping in a different axle with the right gear ratio (4.10), etc.

Thanks for your help.

*Fast68Chevy* · 09-14-2002, 08:03 PM

all are minimally 12x2", how are you going about measuring the width of shoe/inside of drum ?

*60apache4* · 09-14-2002, 10:50 PM

I haven't actually pulled the drums and shoes, let alone measure them. I'm just going with the specs in my reference books and there's no listing for a 71, 3/4, 4x4.

BTW, how does one go about pulling the brakes on a 3/4 ton. I understand you may have to pull the whole axle and "C" clip from the differential, right?

09-14-2002, 06:39 PM	#1
60apache4 Account Suspended Join Date: Nov 2001 Location: Oregon Posts: 147	rear brake swap I have a 71 3/4 ton 4x4, with what I believe is an eaton rear diff (round pumpkin), and I it has a unique brake drum size of 11" x 1-3/4". No parts are listed in any books for this brake drum & shoe. So, I was wondering if I could just swap in the backing plate from a Dana 60 to get the more common 12" x 2" brakes; cheaper and better brakes. Your thoughts & ideas appreciated, short of swapping in a different axle with the right gear ratio (4.10), etc. Thanks for your help.

09-14-2002, 08:03 PM	#2
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	all are minimally 12x2", how are you going about measuring the width of shoe/inside of drum ? Last edited by Fast68Chevy; 09-14-2002 at 08:06 PM.

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

09-14-2002, 10:50 PM	#3
60apache4 Account Suspended Join Date: Nov 2001 Location: Oregon Posts: 147	I haven't actually pulled the drums and shoes, let alone measure them. I'm just going with the specs in my reference books and there's no listing for a 71, 3/4, 4x4. BTW, how does one go about pulling the brakes on a 3/4 ton. I understand you may have to pull the whole axle and "C" clip from the differential, right?



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.