Brake Drum specs - The 1947 - Present Chevrolet & GMC Truck Message Board Network

littlee_domn8r · 03-18-2011, 03:44 PM

Hey guys,

I'm rebuilding my Dana 44 differential & at the same time putting in new brake shoes. I took the drums to O'Reilly's to get them turned, but they said they can't find any info on how thin they can be, so they won't turn them. Do any of you know how thin you can go or know where I could find this info?

*blackedoutharley* · 03-18-2011, 04:39 PM

With 11" brakes (11" X 2") the max diameter should be 11.060" if memory serves me correctly.

Edit: Just checked mine; they are stamped "Max dia. 11.090" " Your drums should be stamped with the max spec.

New drums aren't that expensive by the way.

**Captainfab** · 03-19-2011, 01:00 AM

New drums for the Dana 44 are hard to find, but it seems like someone here found a part number for them and where to get them. I just don't remember who it was. You might try a search here if you find you need new drums.

slorio · 03-19-2011, 10:32 PM

Captainfab:
I believe that was me. See this discussion:

http://67-72chevytrucks.com/vboard/s...d.php?t=412665

Regards,
Steve
New Orleans

slorio · 03-19-2011, 10:36 PM

Here's two of the Raybestos 2067's that I mention in the previous discussion on Ebay for $43 each which should be good price for them.

http://cgi.ebay.com/ebaymotors/RAYBE...Q5fAccessories

I hope this is helpful.
Regards,
Steve
New Orleans

littlee_domn8r · 03-21-2011, 06:45 PM

I didn't even think of looking on the drum itself, but after closer review, mine are stamped & they say discard diameter 11.06. Unfortunately, O'Reilly's says mine will be out of spec if they turn them, so I bought new ones from them & they are not the same drum. they dont have an offset hub like the stock ones do, so I'm guessing they won't work. LMC lists hubs for 45.00, but I will check out the ones mentioned by Slorio since he's already been through this.

I really appreciate the help on this, thanks guys!

*blackedoutharley* · 03-21-2011, 06:48 PM

Did they even measure them prior to deciding that they won't be any good?

Take them to a brake shop and have them measured by somebody that knows what they are doing.

Quote:

Originally Posted by littlee_domn8r

but they said they can't find any info on how thin they can be, so they won't turn them.

This is what I mean... they weren't able to look on the drum for the spec? They're supposed to be the pros but they missed this?

littlee_domn8r · 03-21-2011, 06:59 PM

Yes they did, said they measure 11.01 & 11.012. I believe I will find an actual brake shop because I had to argue with the "manager" about which number was the discard one (11.00 or 11.06) the first time. Never hurts to get a second opinion anyway & if it saves me 80 bucks, then it's worth it.

*blackedoutharley* · 03-21-2011, 07:16 PM

Absolutely!

At 11.010 & .012' that is plenty of meat to turn them provided they aren't gouged or anything. if they are smooth you should be able to turn them taking no more than .020" off. That would put them at near discard and they would need to be replaced at the next brake job but at least you will have time to prepare for that expense.

03-18-2011, 03:44 PM	#1
littlee_domn8r AKA "Hurricane Hank" Join Date: Sep 2003 Location: Elk Point, South Dakota Posts: 316	Brake Drum specs Hey guys, I'm rebuilding my Dana 44 differential & at the same time putting in new brake shoes. I took the drums to O'Reilly's to get them turned, but they said they can't find any info on how thin they can be, so they won't turn them. Do any of you know how thin you can go or know where I could find this info? __________________ "looking back, knowing that you gave it your all.... win or lose, you finish a Champion" Dale Earnhardt "They say hard work never killed anyone, But why take a chance? 63 GMC C10 Custom LWB 355/350 AT 00 Chevy Silverado 1500 base V6/AT 07 Chevy Monte Carlo SS 5.3 V8

03-18-2011, 04:39 PM	#2
blackedoutharley Account Suspended Join Date: Jul 2007 Location: Plumas Lake, Ca. Posts: 1,009	Re: Brake Drum specs With 11" brakes (11" X 2") the max diameter should be 11.060" if memory serves me correctly. Edit: Just checked mine; they are stamped "Max dia. 11.090" " Your drums should be stamped with the max spec. New drums aren't that expensive by the way. Last edited by blackedoutharley; 03-18-2011 at 04:45 PM.

03-19-2011, 01:00 AM	#3
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: Brake Drum specs New drums for the Dana 44 are hard to find, but it seems like someone here found a part number for them and where to get them. I just don't remember who it was. You might try a search here if you find you need new drums. __________________ 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 Last edited by Captainfab; 03-19-2011 at 01:00 AM.

03-19-2011, 10:32 PM	#4
slorio Registered User Join Date: Sep 2006 Location: Louisiana Posts: 375	Re: Brake Drum specs Captainfab: I believe that was me. See this discussion: http://67-72chevytrucks.com/vboard/s...d.php?t=412665 Regards, Steve New Orleans

03-19-2011, 10:36 PM	#5
slorio Registered User Join Date: Sep 2006 Location: Louisiana Posts: 375	Re: Brake Drum specs Here's two of the Raybestos 2067's that I mention in the previous discussion on Ebay for $43 each which should be good price for them. http://cgi.ebay.com/ebaymotors/RAYBE...Q5fAccessories I hope this is helpful. Regards, Steve New Orleans

03-21-2011, 06:45 PM	#6
littlee_domn8r AKA "Hurricane Hank" Join Date: Sep 2003 Location: Elk Point, South Dakota Posts: 316	Re: Brake Drum specs I didn't even think of looking on the drum itself, but after closer review, mine are stamped & they say discard diameter 11.06. Unfortunately, O'Reilly's says mine will be out of spec if they turn them, so I bought new ones from them & they are not the same drum. they dont have an offset hub like the stock ones do, so I'm guessing they won't work. LMC lists hubs for 45.00, but I will check out the ones mentioned by Slorio since he's already been through this. I really appreciate the help on this, thanks guys! __________________ "looking back, knowing that you gave it your all.... win or lose, you finish a Champion" Dale Earnhardt "They say hard work never killed anyone, But why take a chance? 63 GMC C10 Custom LWB 355/350 AT 00 Chevy Silverado 1500 base V6/AT 07 Chevy Monte Carlo SS 5.3 V8

03-21-2011, 06:59 PM	#8
littlee_domn8r AKA "Hurricane Hank" Join Date: Sep 2003 Location: Elk Point, South Dakota Posts: 316	Re: Brake Drum specs Yes they did, said they measure 11.01 & 11.012. I believe I will find an actual brake shop because I had to argue with the "manager" about which number was the discard one (11.00 or 11.06) the first time. Never hurts to get a second opinion anyway & if it saves me 80 bucks, then it's worth it. __________________ "looking back, knowing that you gave it your all.... win or lose, you finish a Champion" Dale Earnhardt "They say hard work never killed anyone, But why take a chance? 63 GMC C10 Custom LWB 355/350 AT 00 Chevy Silverado 1500 base V6/AT 07 Chevy Monte Carlo SS 5.3 V8

03-21-2011, 07:16 PM	#9
blackedoutharley Account Suspended Join Date: Jul 2007 Location: Plumas Lake, Ca. Posts: 1,009	Re: Brake Drum specs Absolutely! At 11.010 & .012' that is plenty of meat to turn them provided they aren't gouged or anything. if they are smooth you should be able to turn them taking no more than .020" off. That would put them at near discard and they would need to be replaced at the next brake job but at least you will have time to prepare for that expense.



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