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#1 |
Registered User
Join Date: Jul 2012
Location: Colorado Springs
Posts: 44
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64 GMC Rear Drum Question
I am working on a 64 GMC 2wd 1000series. It originally had 4 wheel drum. I just finished up the front disc conversion and I am working on re-doing the back drum brakes. I have gone to autozone and O'reillys and neither carry a rear drum hardware kit. I can only find for the front. I know both drums are 11X2, so I am wondering if they are the same?
If anyone is sure or has done this, any input is helpful. Secondly, if I were to want to change to a 5 lug from 6 lug, what all is entailed since I will already have the rear apart...? |
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#2 |
Registered User
Join Date: Sep 2012
Location: jackson,tn
Posts: 188
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Re: 64 GMC Rear Drum Question
the simplest thing for you to do if you are keep the original axles and drums is to have them redrilled for 5 lug, i know companies such as mosier offers that service, but a local competent machine should should be able to do it for you as well and the cost is usually pretty low
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#3 |
Registered User
![]() Join Date: Sep 2009
Location: menifee california
Posts: 788
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Re: 64 GMC Rear Drum Question
autozone is where i bought mine for my 64 gmc. wheel cilinders and everything. one thing i found out though to get new drums you need to order them for a 72 chevy blazer 4 wheel drive. because the drums are wider and the chevy wont fit
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#4 |
Registered User
Join Date: Aug 2012
Location: Fort Campbell, KY
Posts: 494
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Re: 64 GMC Rear Drum Question
Shop around, I just got drums/hardware kits/pads/lines from Orielly with free shipping, cheaper than local pickup at autozone.
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#5 |
Registered User
Join Date: Aug 2012
Location: Tooele, Utah
Posts: 327
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Re: 64 GMC Rear Drum Question
I got my hardware kit from Napa for the rear of my 64'
__________________
1936 Chevrolet 1/2t 1964 Chevrolet C10 1964 Chevrolet C10 (sons) 1965 Chevrolet K10 Suburban 1969 Chevrolet C10 1937 Plymouth P4 |
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#6 |
Registered User
Join Date: Feb 2011
Location: Hesperia, Ca ( Southern California )
Posts: 184
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Re: 64 GMC Rear Drum Question
Good info & great timing. I plan on going through all 4 drums on a 66 c20 this weekend. It's been sitting since '04 when I parked it. I best get to napa tomorrow to see if they have everything. I want to replace everything but the drums. Also might add a better break master cylinder & if I want to get fancy a booster =)
__________________
1966 Chevy C 20 Lwb (Now a project)5.7 400hp 1996 Chevy Silverado Reg Cab Lwb (Daily Driver) 5.7 2000 Chevy S-10 Ex Cab Lowered 4/4 4.3 (For Fun) 2008 GMC Sierra Ex Cab 5.3 (once a month driver) Wife's 74 Ranchero 500 351 Cleveland (One Owner) My name is Mike and im in So. Cal (Hi Desert) |
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#7 | |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: 64 GMC Rear Drum Question
More than likely your GMC has the Dana 44 differential. Brake parts are more difficult to find and are not the same as for a Chevy truck 12 bolt. If I remember correctly there are 2 members that have posted where they have found the drums and hardware. Member markeb01 is one of them, but I don't remember the other. A quick search might turn up something if they don't chime in here.
Quote:
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#8 | |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: 64 GMC Rear Drum Question
Your '66 C20 will likely have the Eaton HO52 differential. Parts for those are getting hard to find and often times $$$ when you do. You may get lucky though.
Quote:
__________________
Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#9 |
Registered User
Join Date: Sep 2006
Location: Louisiana
Posts: 374
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Re: 64 GMC Rear Drum Question
markreed:
I am unsure what parts you are looking for. The discussion on the drums for the 1000 series GMC is here: http://67-72chevytrucks.com/vboard/s...d.php?t=412665 Those Dana 44 rear ends like your truck were used extensively, especially in Jeeps. You shouldn't have any problems finding hardware if you use the Jeep listings up through the 80's. I hope this is helpful. regards, Steve New Orleans |
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#10 |
Registered User
Join Date: Jul 2012
Location: flint michigan
Posts: 37
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Re: 64 GMC Rear Drum Question
i just got my rear end back today its a Dana 44 out of a 66 GMC with leafs. i had the springs De arched 2 inches & the axles re drilled to 5 on 5 . you can send your axles out to moser or find a speed shop in your area to do the work thats what i did. i haven't got the drums yet that will be tomorrow. here are some pictures we took tonite.good luck i hope it helped.
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