NEED HELP! I've got a BIG REAR (drums) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ldgn63 · 01-21-2011, 10:25 PM

short story:
ive got a BIG DRUM '72 c10 rear and wondering if i can use later model brake parts on it since i cant find new '72 big brake parts...???

long explanation:

'72 c10 rear and just found out that it has the BIG REAR DRUMS!
11-11/32 x 2-3/4" rather than 11x2"

problem is i need the drum and EVERYTHING inside it and i am only finding parts for the 11x2.... (only BIG thing i find is shoes)

i notice that later models are bigger and share the same 2-3/4" width but the diameters are 11-5/32 (6/32 smaller)

since i need everything... i am wondering if i can use everything from a later model as long as it is all matched up?
anyone tried this?

PO had put 11x2 stuff on it and didnt realize that he was only using 1.25" of his 2" shoes!!! yikes... i was like WOW when i open it up!

ldgn63 · 01-22-2011, 12:41 AM

hmmmm
i wonder if this means that ECE is already doing this??? (bottom)

http://www.earlyclassic.com/catalog....upgrade%20kits

**Stocker** · 01-22-2011, 01:29 AM

Can't answer your question, sorry -- but here's a thread from a while back. It may have some info that will help you find the parts you're looking for.

http://67-72chevytrucks.com/vboard/s...d.php?t=419077

ldgn63 · 01-22-2011, 11:06 AM

thanks Stocker.
i read that one (along with about 50 others) before i posted.
im having a hard time believing nobody else has had this issue! LOL
mayne I'm the only one who thinks it is an issue! ;-)

i guess i could take backing plate to drum off of a 70's donor but i think i would rather just weld new perches on the donor! ha!

ldgn63 · 01-23-2011, 08:54 PM

anyone got ideas sunday eve?
thanks!

Tx Firefighter · 01-23-2011, 09:47 PM

You need to buy parts for a 72 Suburban to get the larger brakes. It's a glitch of the parts system that they don't list the 2 3/4 brakes for pickups, only Suburbans. I have been through this before on past trucks.

Tx Firefighter · 01-23-2011, 09:49 PM

I had written an article in the past with pictures showing the differences.

http://67-72chevytrucks.com/vboard/s...d.php?t=187552

**N2TRUX** · 01-23-2011, 11:43 PM

Quote:

Originally Posted by Tx Firefighter

I had written an article in the past with pictures showing the differences.

http://67-72chevytrucks.com/vboard/s...d.php?t=187552

Great info. That will soon be an FAQ...

Zeke · 01-24-2011, 07:20 AM

you can also change to newer model stuff, everything is bolt up look for a truck with the JB5 brakes.
http://67-72chevytrucks.com/vboard/s...d.php?t=370561

ldgn63 · 01-24-2011, 09:52 AM

Ha! I was waiting for you to chime in with the answer Tx Firefighter! LOL And you did!
Thanks so much! You might want to change your name to GMencyclopeia!

Thank you as well Zeke. I have an '80 and was pondering just that.

ldgn63 · 01-24-2011, 09:54 AM

PS... i SWEAR i searched first! TX, great write up! Many thanks!

**N2TRUX** · 01-24-2011, 12:12 PM

That post is now an FAQ- LINK

01-21-2011, 10:25 PM	#1
ldgn63 Registered User Join Date: Dec 2005 Location: DFW Posts: 81	NEED HELP! I've got a BIG REAR (drums) short story: ive got a BIG DRUM '72 c10 rear and wondering if i can use later model brake parts on it since i cant find new '72 big brake parts...??? long explanation: '72 c10 rear and just found out that it has the BIG REAR DRUMS! 11-11/32 x 2-3/4" rather than 11x2" problem is i need the drum and EVERYTHING inside it and i am only finding parts for the 11x2.... (only BIG thing i find is shoes) i notice that later models are bigger and share the same 2-3/4" width but the diameters are 11-5/32 (6/32 smaller) since i need everything... i am wondering if i can use everything from a later model as long as it is all matched up? anyone tried this? PO had put 11x2 stuff on it and didnt realize that he was only using 1.25" of his 2" shoes!!! yikes... i was like WOW when i open it up!

01-22-2011, 12:41 AM	#2
ldgn63 Registered User Join Date: Dec 2005 Location: DFW Posts: 81	Re: NEED HELP! I've got a BIG REAR (drums) hmmmm i wonder if this means that ECE is already doing this??? (bottom) http://www.earlyclassic.com/catalog....upgrade%20kits

01-22-2011, 01:29 AM	#3
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,728	Re: NEED HELP! I've got a BIG REAR (drums) Can't answer your question, sorry -- but here's a thread from a while back. It may have some info that will help you find the parts you're looking for. http://67-72chevytrucks.com/vboard/s...d.php?t=419077 __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay

01-22-2011, 11:06 AM	#4
ldgn63 Registered User Join Date: Dec 2005 Location: DFW Posts: 81	Re: NEED HELP! I've got a BIG REAR (drums) thanks Stocker. i read that one (along with about 50 others) before i posted. im having a hard time believing nobody else has had this issue! LOL mayne I'm the only one who thinks it is an issue! ;-) i guess i could take backing plate to drum off of a 70's donor but i think i would rather just weld new perches on the donor! ha!

01-23-2011, 08:54 PM	#5
ldgn63 Registered User Join Date: Dec 2005 Location: DFW Posts: 81	Re: NEED HELP! I've got a BIG REAR (drums) anyone got ideas sunday eve? thanks!

01-23-2011, 09:47 PM	#6
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: NEED HELP! I've got a BIG REAR (drums) You need to buy parts for a 72 Suburban to get the larger brakes. It's a glitch of the parts system that they don't list the 2 3/4 brakes for pickups, only Suburbans. I have been through this before on past trucks. __________________ I'm on the Instagram- @Gearhead_Kevin

01-23-2011, 09:49 PM	#7
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: NEED HELP! I've got a BIG REAR (drums) I had written an article in the past with pictures showing the differences. http://67-72chevytrucks.com/vboard/s...d.php?t=187552 __________________ I'm on the Instagram- @Gearhead_Kevin

01-24-2011, 07:20 AM	#9
Zeke Active Member Join Date: Jun 2002 Location: L.A. Lower Alabama Posts: 453	Re: NEED HELP! I've got a BIG REAR (drums) you can also change to newer model stuff, everything is bolt up look for a truck with the JB5 brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=370561 __________________ 1969 C10 350 3spd 1995 GMC 3500 XC 350 dually When Thomas Edison worked late into the night on the electric light, he had to do it by gas lamp or candle. I'm sure it made the work seem that much more urgent. George Carlin

01-24-2011, 09:52 AM	#10
ldgn63 Registered User Join Date: Dec 2005 Location: DFW Posts: 81	Re: NEED HELP! I've got a BIG REAR (drums) Ha! I was waiting for you to chime in with the answer Tx Firefighter! LOL And you did! Thanks so much! You might want to change your name to GMencyclopeia! Thank you as well Zeke. I have an '80 and was pondering just that.

01-24-2011, 09:54 AM	#11
ldgn63 Registered User Join Date: Dec 2005 Location: DFW Posts: 81	Re: NEED HELP! I've got a BIG REAR (drums) PS... i SWEAR i searched first! TX, great write up! Many thanks!

01-24-2011, 12:12 PM	#12
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,021	Re: NEED HELP! I've got a BIG REAR (drums) That post is now an FAQ- LINK __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"



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