1966 gmc rear drum - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BuiltByBrooks · 03-08-2009, 09:14 PM

Having a tough time finding the rear drum replacement for a 1966 gmc with a leaf spring rear end. The rear end is a dana 44 10 bolt. Any idea where to find new ones

Thanks, Brooks

TwoFiftyShifter · 03-08-2009, 10:38 PM

Ialso need one for my GMC leaf..... I have a chevy one and I just need to test fit it..... Anyone know that they DONT work?

slorio · 03-09-2009, 09:22 AM

I have two part numbers you can try for rear 6 lug brake drums. The first is a Wagner BD 60089. The second is Allsafe 2067 DGS.

I used the Allsafe from Autozone. It is for a later model (I think 67-72) truck with 4 wheel drive. It has fins on the outside unlike the original that is smooth. The only modification that I had to make was to drill the 6 lug holes from 1/2" to 9/16" so that the drum would fit on the shoulders on the rear lugs like the original. This drum had the right offset unlike the Chivy drums.

The Wagner was a number that I got from another member of the 6066gmcguy.org site. I haven't used that one, but was told it was a direct match to the original (a bit pricey, though is what I remember).

I hope this helps with those looking for rear 6 lug drums.

Regards,

Steve
New Orleans

BuiltByBrooks · 03-09-2009, 06:13 PM

Hey Thanks alot for your time....Steve

TwoFiftyShifter · 03-09-2009, 09:10 PM

So the offset is different on a chevy? I have 68 and 79 chevy drums..... neither will work? I'll test them anyways...

slorio · 03-10-2009, 08:59 AM

The 1960-1966, 1/2 ton, 6-lug Chevies use the same drum front and rear. The GMC's use the same drum as the Chevies on the front, but have different drums on the rear. Chevies had coil spring 12 bolt rear ends, GMC's had 10 bolt leaf spring rear ends. The GMC drum is 11" diameter by 2" shoes like the Chevies, but the GMC drum has more offset than the Chevy drum.

I hope this is helpful.
Regards,
Steve
New Orleans

03-08-2009, 09:14 PM	#1
BuiltByBrooks Argon User Join Date: Oct 2008 Location: Qc, AZ Posts: 353	1966 gmc rear drum Having a tough time finding the rear drum replacement for a 1966 gmc with a leaf spring rear end. The rear end is a dana 44 10 bolt. Any idea where to find new ones Thanks, Brooks

03-08-2009, 10:38 PM	#2
TwoFiftyShifter Registered User Join Date: Nov 2008 Location: Gwinnett GA Posts: 1,803	Re: 1966 gmc rear drum Ialso need one for my GMC leaf..... I have a chevy one and I just need to test fit it..... Anyone know that they DONT work? __________________ 1982 K10 SWB 1987 V20 - Sold - Doh!

03-09-2009, 09:22 AM	#3
slorio Registered User Join Date: Sep 2006 Location: Louisiana Posts: 374	Re: 1966 gmc rear drum I have two part numbers you can try for rear 6 lug brake drums. The first is a Wagner BD 60089. The second is Allsafe 2067 DGS. I used the Allsafe from Autozone. It is for a later model (I think 67-72) truck with 4 wheel drive. It has fins on the outside unlike the original that is smooth. The only modification that I had to make was to drill the 6 lug holes from 1/2" to 9/16" so that the drum would fit on the shoulders on the rear lugs like the original. This drum had the right offset unlike the Chivy drums. The Wagner was a number that I got from another member of the 6066gmcguy.org site. I haven't used that one, but was told it was a direct match to the original (a bit pricey, though is what I remember). I hope this helps with those looking for rear 6 lug drums. Regards, Steve New Orleans

03-09-2009, 06:13 PM	#4
BuiltByBrooks Argon User Join Date: Oct 2008 Location: Qc, AZ Posts: 353	Re: 1966 gmc rear drum Hey Thanks alot for your time....Steve

03-09-2009, 09:10 PM	#5
TwoFiftyShifter Registered User Join Date: Nov 2008 Location: Gwinnett GA Posts: 1,803	Re: 1966 gmc rear drum So the offset is different on a chevy? I have 68 and 79 chevy drums..... neither will work? I'll test them anyways... __________________ 1982 K10 SWB 1987 V20 - Sold - Doh!

03-10-2009, 08:59 AM	#6
slorio Registered User Join Date: Sep 2006 Location: Louisiana Posts: 374	Re: 1966 gmc rear drum The 1960-1966, 1/2 ton, 6-lug Chevies use the same drum front and rear. The GMC's use the same drum as the Chevies on the front, but have different drums on the rear. Chevies had coil spring 12 bolt rear ends, GMC's had 10 bolt leaf spring rear ends. The GMC drum is 11" diameter by 2" shoes like the Chevies, but the GMC drum has more offset than the Chevy drum. I hope this is helpful. Regards, Steve New Orleans



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