1970 1 ton needs some help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Thatstoneguy · 07-09-2014, 01:12 PM

Brand new on here, so nice to meet you all. I have a 1970 1 ton, that is in need of rear drums. Apparently they're fairly hard to find. Any chance you guys might know where I'd find some, or my uncle said that there's a chance I could swap in newer ones? I'm really not knowledgable at all in regards to vehicles, but I love this truck, and I want to keep it on the road... Thank you in advance for any info you may have.

**Stocker** · 07-09-2014, 01:41 PM

Welcome to the board! Might help to know which differential you have. With drums hard to find, chances are it's an Eaton. Check this thread from a few years back, there may be some helpful info. http://67-72chevytrucks.com/vboard/s...d.php?t=443837

davepl · 07-09-2014, 02:04 PM

Found 7 of them on RockAuto. Bendix, 3 Centrics, AC Delco, Wagner, and Raybestos.

Those are all for the 1970 C30. So with 7 choices from one website alone they can't be that hard to find. It looks like there are multiple sizes, probably varies by axle. So you'd need to know the diameter of yours: 11 5/32, 12.55", 13"

Knowing the diameter (or the axle type) should get you the one you need. I presume everything is 8-bolt.

**mikey531** · 07-09-2014, 05:47 PM

You made it Bri ! Just ask and there are always people on here to help. This is where I found the lug nuts for the wheels you got. Check the above post.

davepl · 07-09-2014, 06:56 PM

I've had so many people answer questions for me on this board when I needed help that I enjoy doing a little digging for folks. Just wish the board had a "This post was helpful" feature like Amazon, it'd make searching easier. And we'd be able to build cool rep.

Texasbigblock · 07-09-2014, 07:17 PM

Do you have a single or dual rear wheel truck? Those listed above must be single wheel drums on RockAuto. I'm almost positive the DRW drums for the HO72 are obsolete. Most are changing out the rear end to a newer model 14 bolt. I believe you have to relocate the rear end brackets though for it it bolt in.

**special-K** · 07-09-2014, 07:22 PM

You can swap 14-bolt brakes to the HO52/72,backing plate out

Thatstoneguy · 07-09-2014, 07:51 PM

It is a dually. Are any of these options dually?

SS Tim · 07-09-2014, 08:17 PM

Of the seven 70 brake drums listed on Rock Auto, six of the listings were for "front" drums and one was for the R05 DRW rear drums. Stock SRW rear drums are very hard to find for 67-72 C30s.

"CENTRIC Part # 12266017 More Info Premium Drum-Preferred
Rear; Rear Drum brakes; 13" Rear Drum; Dual Rear Wheels $106.79"

davepl · 07-09-2014, 08:24 PM

But he needs DRW for a dually, correct? So it's still up there, I think.

On eBay I can find the 13" rears but never having had a dually I have no idea what size they need.

SS Tim · 07-09-2014, 09:08 PM

In general the C30s SRW and DRW had 13" rear drums unless they were a chassic cab with the H0110 10 lug axle (they are 15").
Yes the OP needed DRW drums and the Centrics RA has should do the trick.

Thatstoneguy · 07-09-2014, 09:17 PM

You guys are awesome. Thank you again.

**Chevyland** · 07-09-2014, 09:30 PM

You might try Blackbird custom trucks. They have a kit to convert ho52 and ho72's to rear disc. I did it on my c30 longhorn that had an ho72 in it. It is a single axle, but you could call and find out if it works on dually too. It was an easy conversion that ended up saving $. Good luck!

Texasbigblock · 07-09-2014, 09:50 PM

I emailed Blackbird a while back and they told me that did not have anything for the dually's. Not sure if anything has changed or not but at that time they had stuff for SRW only.

**70cst** · 07-09-2014, 11:14 PM

Hey Thatstoneguy ...

to the forums and

from Ohio.

on your new ride. Also 70's rock

Thatstoneguy · 07-10-2014, 11:32 AM

Think we found one drum at least. Gonna measure it up and make sure, but thanks again. I also need the rear hanger/mount for the leaf spring. Apparently that's another part of this truck that's really hard to find. And good leads on that? Someone told me that it's easier to make em than to find em...

**special-K** · 07-10-2014, 04:37 PM

Quote:

Originally Posted by Thatstoneguy

It is a dually. Are any of these options dually?

Yes,my option is. I never did it but got to thinking about it because people make 14-bolt disc kits work on HO52s and people use 14-bolt lockers in HO52s by using 14-bolts axle shafts. I suggested it to a fella in a bind needing to get his '72 C/30 rollback registered pronto to qualify for a contract that was at the deadline for bids. I suggested a full 14-bolt swap but he feel he had time for the fab work,so he went with my hunch. The next day he had the contract

You can find a spring hanger on the parts board.

**mikey531** · 07-11-2014, 05:31 AM

Hey Bri take some pictures of your truck and put them on here.

07-09-2014, 01:12 PM	#1
Thatstoneguy Registered User Join Date: Jul 2014 Location: Kennebunkport Posts: 5	1970 1 ton needs some help Brand new on here, so nice to meet you all. I have a 1970 1 ton, that is in need of rear drums. Apparently they're fairly hard to find. Any chance you guys might know where I'd find some, or my uncle said that there's a chance I could swap in newer ones? I'm really not knowledgable at all in regards to vehicles, but I love this truck, and I want to keep it on the road... Thank you in advance for any info you may have.

07-09-2014, 01:41 PM	#2
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,692	Re: 1970 1 ton needs some help Welcome to the board! Might help to know which differential you have. With drums hard to find, chances are it's an Eaton. Check this thread from a few years back, there may be some helpful info. http://67-72chevytrucks.com/vboard/s...d.php?t=443837 __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay

07-09-2014, 02:04 PM	#3
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: 1970 1 ton needs some help Found 7 of them on RockAuto. Bendix, 3 Centrics, AC Delco, Wagner, and Raybestos. Those are all for the 1970 C30. So with 7 choices from one website alone they can't be that hard to find. It looks like there are multiple sizes, probably varies by axle. So you'd need to know the diameter of yours: 11 5/32, 12.55", 13" Knowing the diameter (or the axle type) should get you the one you need. I presume everything is 8-bolt. __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible

07-09-2014, 05:47 PM	#4
mikey531 Senior Member Join Date: Jul 2009 Location: Exeter, NH Posts: 794	Re: 1970 1 ton needs some help You made it Bri ! Just ask and there are always people on here to help. This is where I found the lug nuts for the wheels you got. Check the above post.

07-09-2014, 06:56 PM	#5
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: 1970 1 ton needs some help I've had so many people answer questions for me on this board when I needed help that I enjoy doing a little digging for folks. Just wish the board had a "This post was helpful" feature like Amazon, it'd make searching easier. And we'd be able to build cool rep. __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible

07-09-2014, 07:17 PM	#6
Texasbigblock Registered User Join Date: Mar 2007 Location: Texas Posts: 252	Re: 1970 1 ton needs some help Do you have a single or dual rear wheel truck? Those listed above must be single wheel drums on RockAuto. I'm almost positive the DRW drums for the HO72 are obsolete. Most are changing out the rear end to a newer model 14 bolt. I believe you have to relocate the rear end brackets though for it it bolt in. __________________ -Scott- 1970 C10 shortbed 396 1969 C30 dually flatbed "Vidalia"

07-09-2014, 07:22 PM	#7
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,852	Re: 1970 1 ton needs some help You can swap 14-bolt brakes to the HO52/72,backing plate out __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

07-09-2014, 07:51 PM	#8
Thatstoneguy Registered User Join Date: Jul 2014 Location: Kennebunkport Posts: 5	Re: 1970 1 ton needs some help It is a dually. Are any of these options dually?

07-09-2014, 08:17 PM	#9
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,503	Re: 1970 1 ton needs some help Of the seven 70 brake drums listed on Rock Auto, six of the listings were for "front" drums and one was for the R05 DRW rear drums. Stock SRW rear drums are very hard to find for 67-72 C30s. "CENTRIC Part # 12266017 More Info Premium Drum-Preferred Rear; Rear Drum brakes; 13" Rear Drum; Dual Rear Wheels $106.79" __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban

07-09-2014, 08:24 PM	#10
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: 1970 1 ton needs some help But he needs DRW for a dually, correct? So it's still up there, I think. On eBay I can find the 13" rears but never having had a dually I have no idea what size they need. __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible

07-09-2014, 09:08 PM	#11
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,503	Re: 1970 1 ton needs some help In general the C30s SRW and DRW had 13" rear drums unless they were a chassic cab with the H0110 10 lug axle (they are 15"). Yes the OP needed DRW drums and the Centrics RA has should do the trick. __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban

07-09-2014, 09:17 PM	#12
Thatstoneguy Registered User Join Date: Jul 2014 Location: Kennebunkport Posts: 5	Re: 1970 1 ton needs some help You guys are awesome. Thank you again.

07-09-2014, 09:30 PM	#13
Chevyland Senior Member Join Date: Aug 2013 Location: Ca. <-> Ma. Posts: 5,726	Re: 1970 1 ton needs some help You might try Blackbird custom trucks. They have a kit to convert ho52 and ho72's to rear disc. I did it on my c30 longhorn that had an ho72 in it. It is a single axle, but you could call and find out if it works on dually too. It was an easy conversion that ended up saving $. Good luck!

07-09-2014, 09:50 PM	#14
Texasbigblock Registered User Join Date: Mar 2007 Location: Texas Posts: 252	Re: 1970 1 ton needs some help I emailed Blackbird a while back and they told me that did not have anything for the dually's. Not sure if anything has changed or not but at that time they had stuff for SRW only. __________________ -Scott- 1970 C10 shortbed 396 1969 C30 dually flatbed "Vidalia"

07-09-2014, 11:14 PM	#15
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,374	Re: 1970 1 ton needs some help Hey Thatstoneguy ... to the forums and from Ohio. on your new ride. Also 70's rock __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder!



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07-10-2014, 11:32 AM	#16
Thatstoneguy Registered User Join Date: Jul 2014 Location: Kennebunkport Posts: 5	Re: 1970 1 ton needs some help Think we found one drum at least. Gonna measure it up and make sure, but thanks again. I also need the rear hanger/mount for the leaf spring. Apparently that's another part of this truck that's really hard to find. And good leads on that? Someone told me that it's easier to make em than to find em...

07-11-2014, 05:31 AM	#18
mikey531 Senior Member Join Date: Jul 2009 Location: Exeter, NH Posts: 794	Re: 1970 1 ton needs some help Hey Bri take some pictures of your truck and put them on here.

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