Where to buy concave washers/shims on upper control arm??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

wgeyer88 · 07-21-2013, 05:53 PM

Hi guys,

While cleaning up the mess I made during disassembly, I somehow managed to throw away all four of the concave washers that go on the control arm mounting studs between the frame and the upper control arms. The washers are flat on one side and concave on the other side. I've checked Napa and O'Reilly in town with no luck. LMC does not seem to have this part either, although it's difficult to tell from their diagram. Does anybody have any idea where I might be able to find these washers?

Thanks in advance for any help!

-Will

Lee H · 07-21-2013, 06:02 PM

I was not able to locate them when I misplace mine last year. I wound up getting a set at my local pick a part. These are on my list to get an extra set. You might PM Cheyenne Shortstep, he might have some.

Koffer · 07-21-2013, 06:43 PM

LMC has them

**leddzepp** · 07-21-2013, 06:55 PM

Post a WTB ad on the parts board. Someone will surely have some.
Posted via Mobile Device

wgeyer88 · 07-21-2013, 08:23 PM

Lee H - I was thinking I might be able to find them there. They usually have a C10 sitting around. I was hoping not to have to go through all that trouble but I will definitely check them out.
leddzepp - That was my next step. Most people seem to sell frames complete or at least the front cross-member complete. Hopefully somebody will have some laying around!
Koffer - You wouldn't happen to know the LMC part number? I've looked on their diagram, but I'm having trouble identifying exactly which part it is.

Thanks for the help!

Koffer · 07-22-2013, 12:29 AM

page 142 in the LMC catalog online has a nice shot of what you need shown as part # 10 in the diagram part # 30-2905

wgeyer88 · 07-22-2013, 09:34 AM

Thanks Koffer,

I just ordered the parts. I wasn't sure if that was the correct part because it looks like a rectangular spacer on the parts diagram. I'll keep you updated when the parts arrive.

Thanks again for the help

wgeyer88 · 07-25-2013, 12:18 AM

Just to give everybody a heads up, the part I ordered is not the correct part (#10, page 142 LMC catalog). The part described above looks the same as it does in the catalog (as it should!). It is not the round concave washer, but rather a rectangular washer/spacer that is flat on both sides. Still in search of the concave washers, looks like I'll be making a trip to u-pull this weekend!

Thanks for all the help!

Koffer · 07-25-2013, 08:00 AM

sorry , sounds like you need to talk to LMC and ask WTF ?? But it is LMC .In the pix they do look convex which would fit into the concave part on the upper control arm shaft .

oldno7 · 07-25-2013, 08:05 AM

I went through this several years ago, and did the same thing trying to order through lmc. At that time my dad was still working in the garage at Amren After lisening to me complain for months he ended up making me some. Not sure what material he used but they have never rusted and are chrom/ polished. Funny thing is i actually lost them for a few weeks. I eventually found some off the old ones im pretty sure they are just hanging in my garage i will check today and if i find them would be willing to send them to u, just pay shipping if i find them i will let u no, oldno7

oldno7 · 07-25-2013, 08:17 AM

OK i just walked out to the garage and found them if u PM me your address and phone num i will text u a pic to confirm this is what u need, and we will go from there.

wgeyer88 · 07-25-2013, 10:46 AM

Koffer - haha I guess I should've known something was gonna go wrong considering it's LMC... Hopefully people needing these in the future finds this thread and doesn't make the same mistake I did!

Oldno7 - You are a life saver! It's people like you that make this a great community to be a part of, thank you very much. I will send you a PM and hopefully we can get something figured out. I will gladly pay for the parts as well, just happy I found some

Procurement_man · 07-25-2013, 01:05 PM

I got mine on Ebay search spherical washers and you will be overwhelmed with how many. You will need to measure the size of one or I believe I found the size somewhere on internet can't remember.

**chewychevy67** · 07-25-2013, 03:56 PM

Quote:

Originally Posted by Procurement_man

I got mine on Ebay search spherical washers and you will be overwhelmed with how many. You will need to measure the size of one or I believe I found the size somewhere on internet can't remember.

wish I would have known that before I took another trucks front end completely apart just to get some for my truck. good info.

wgeyer88 · 07-25-2013, 06:34 PM

Quote:

Originally Posted by Procurement_man

I got mine on Ebay search spherical washers and you will be overwhelmed with how many. You will need to measure the size of one or I believe I found the size somewhere on internet can't remember.

Man, I never would have thought to search for "spherical washers". I looked everywhere to track down some "concave washers", which apparently, doesn't seem to exist.

Thanks for posting this, I think it will solve the frustrations of many people in the future. My only concern would be the slope of the concave section. If the washer is too deep, only outside edge would be in contact which is far from ideal.

Bigdav160 · 07-25-2013, 07:50 PM

Quote:

I looked everywhere to track down some "concave washers", which apparently, doesn't seem to exist.

LOL, that's because the one's you needed are "convex" and not concave

67c10rustbuket · 07-26-2013, 06:33 AM

Glad oldno7 got you taken care of.

The lost concave washer issue is pretty common. It would be nice if someone reproduced them.

The concave washer is loose on the stud, and commonly misplaced in the garage. I like to hide things from myself so I dont lose them.

the convex side should not come off unless you knock the studs out of the crossmember.

67c10rustbuket · 07-26-2013, 06:40 AM

Another pic I borrowed from the interweb.... stud,crossmember,convex(pressed),concave(loose),camber shims,control arm shaft.

slow-1 · 07-26-2013, 07:14 AM

A picture is worth 1k words...thanks for posting the pic...very helpful.
Posted via Mobile Device

oldno7 · 07-26-2013, 05:22 PM

The washers are in the mail and there is no charge, they should arive on monday according to the lady at the post office. Glad to help out, and what comes around goes around is how i see it. Hope your project goes good,
oldno7

Baker819 · 09-20-2015, 11:35 PM

I managed to loose just one of my concave washers. Any buddy have a spare they would sell me?

drmatera · 04-28-2017, 02:54 PM

Any chance somebody can measure the OD, ID and thickness of the concave washer? I seem to have lost mine as well. Common problem, maybe we can come up with a part number for replacements.

drmatera · 04-28-2017, 03:13 PM

McMaster Carr

drmatera · 04-28-2017, 03:16 PM

Can't read it very well so here is a link

https://www.mcmaster.com/#spherical-washers/=17eawui

7tee · 05-22-2017, 03:57 PM

I've just ordered these and I'll give feed back after they come...Ed

07-21-2013, 06:02 PM	#2
Lee H Registered User Join Date: Jun 2010 Location: Upland Ca Posts: 4,147	Re: Where to buy concave washers/shims on upper control arm??? I was not able to locate them when I misplace mine last year. I wound up getting a set at my local pick a part. These are on my list to get an extra set. You might PM Cheyenne Shortstep, he might have some. __________________ 1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner. 1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components. My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703

07-21-2013, 06:43 PM	#3
Koffer Registered User Join Date: Dec 2012 Location: Hopewell NJ 08525 Posts: 232	Re: Where to buy concave washers/shims on upper control arm??? LMC has them __________________ '77 P10 (GMs late 60s thru the 70s truck spare parts bin model )

07-21-2013, 06:55 PM	#4
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,033	Re: Where to buy concave washers/shims on upper control arm??? Post a WTB ad on the parts board. Someone will surely have some. Posted via Mobile Device __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul

07-21-2013, 08:23 PM	#5
wgeyer88 Registered User Join Date: Aug 2012 Location: Denver, Co Posts: 245	Re: Where to buy concave washers/shims on upper control arm??? Lee H - I was thinking I might be able to find them there. They usually have a C10 sitting around. I was hoping not to have to go through all that trouble but I will definitely check them out. leddzepp - That was my next step. Most people seem to sell frames complete or at least the front cross-member complete. Hopefully somebody will have some laying around! Koffer - You wouldn't happen to know the LMC part number? I've looked on their diagram, but I'm having trouble identifying exactly which part it is. Thanks for the help! __________________ Will 1970 CST10 SWB LQ4/4L80E 2004 Silverado (sold) 2007.5 Dodge Ram 2500

07-22-2013, 12:29 AM	#6
Koffer Registered User Join Date: Dec 2012 Location: Hopewell NJ 08525 Posts: 232	Re: Where to buy concave washers/shims on upper control arm??? page 142 in the LMC catalog online has a nice shot of what you need shown as part # 10 in the diagram part # 30-2905 __________________ '77 P10 (GMs late 60s thru the 70s truck spare parts bin model )

07-21-2013, 05:53 PM	#1
wgeyer88 Registered User Join Date: Aug 2012 Location: Denver, Co Posts: 245	Where to buy concave washers/shims on upper control arm??? Hi guys, While cleaning up the mess I made during disassembly, I somehow managed to throw away all four of the concave washers that go on the control arm mounting studs between the frame and the upper control arms. The washers are flat on one side and concave on the other side. I've checked Napa and O'Reilly in town with no luck. LMC does not seem to have this part either, although it's difficult to tell from their diagram. Does anybody have any idea where I might be able to find these washers? Thanks in advance for any help! -Will __________________ Will 1970 CST10 SWB LQ4/4L80E 2004 Silverado (sold) 2007.5 Dodge Ram 2500

07-22-2013, 09:34 AM	#7
wgeyer88 Registered User Join Date: Aug 2012 Location: Denver, Co Posts: 245	Re: Where to buy concave washers/shims on upper control arm??? Thanks Koffer, I just ordered the parts. I wasn't sure if that was the correct part because it looks like a rectangular spacer on the parts diagram. I'll keep you updated when the parts arrive. Thanks again for the help __________________ Will 1970 CST10 SWB LQ4/4L80E 2004 Silverado (sold) 2007.5 Dodge Ram 2500

07-25-2013, 12:18 AM	#8
wgeyer88 Registered User Join Date: Aug 2012 Location: Denver, Co Posts: 245	Re: Where to buy concave washers/shims on upper control arm??? Just to give everybody a heads up, the part I ordered is not the correct part (#10, page 142 LMC catalog). The part described above looks the same as it does in the catalog (as it should!). It is not the round concave washer, but rather a rectangular washer/spacer that is flat on both sides. Still in search of the concave washers, looks like I'll be making a trip to u-pull this weekend! Thanks for all the help! __________________ Will 1970 CST10 SWB LQ4/4L80E 2004 Silverado (sold) 2007.5 Dodge Ram 2500

07-25-2013, 08:00 AM	#9
Koffer Registered User Join Date: Dec 2012 Location: Hopewell NJ 08525 Posts: 232	Re: Where to buy concave washers/shims on upper control arm??? sorry , sounds like you need to talk to LMC and ask WTF ?? But it is LMC .In the pix they do look convex which would fit into the concave part on the upper control arm shaft . __________________ '77 P10 (GMs late 60s thru the 70s truck spare parts bin model ) Last edited by Koffer; 07-25-2013 at 08:08 AM.

07-25-2013, 08:05 AM	#10
oldno7 Registered User Join Date: Jan 2007 Location: Ill. Posts: 584	Re: Where to buy concave washers/shims on upper control arm??? I went through this several years ago, and did the same thing trying to order through lmc. At that time my dad was still working in the garage at Amren After lisening to me complain for months he ended up making me some. Not sure what material he used but they have never rusted and are chrom/ polished. Funny thing is i actually lost them for a few weeks. I eventually found some off the old ones im pretty sure they are just hanging in my garage i will check today and if i find them would be willing to send them to u, just pay shipping if i find them i will let u no, oldno7 __________________ Hi everyone, It's nice to know there's other people just as crazy about these old trucks as I am. oldno7

07-25-2013, 08:17 AM	#11
oldno7 Registered User Join Date: Jan 2007 Location: Ill. Posts: 584	Re: Where to buy concave washers/shims on upper control arm??? OK i just walked out to the garage and found them if u PM me your address and phone num i will text u a pic to confirm this is what u need, and we will go from there. __________________ Hi everyone, It's nice to know there's other people just as crazy about these old trucks as I am. oldno7

07-25-2013, 10:46 AM	#12
wgeyer88 Registered User Join Date: Aug 2012 Location: Denver, Co Posts: 245	Re: Where to buy concave washers/shims on upper control arm??? Koffer - haha I guess I should've known something was gonna go wrong considering it's LMC... Hopefully people needing these in the future finds this thread and doesn't make the same mistake I did! Oldno7 - You are a life saver! It's people like you that make this a great community to be a part of, thank you very much. I will send you a PM and hopefully we can get something figured out. I will gladly pay for the parts as well, just happy I found some __________________ Will 1970 CST10 SWB LQ4/4L80E 2004 Silverado (sold) 2007.5 Dodge Ram 2500

07-25-2013, 01:05 PM	#13
Procurement_man Registered User Join Date: Sep 2012 Location: Piedmont, OK Posts: 64	Re: Where to buy concave washers/shims on upper control arm??? I got mine on Ebay search spherical washers and you will be overwhelmed with how many. You will need to measure the size of one or I believe I found the size somewhere on internet can't remember. __________________ "God will often give you more than you can handle so you can learn to depend on him rather than on yourself" ...Craig Groeschel

07-26-2013, 06:33 AM	#17
67c10rustbuket Registered User Join Date: Apr 2011 Location: Mustang, Oklahoma Posts: 2,806	Re: Where to buy concave washers/shims on upper control arm??? Glad oldno7 got you taken care of. The lost concave washer issue is pretty common. It would be nice if someone reproduced them. The concave washer is loose on the stud, and commonly misplaced in the garage. I like to hide things from myself so I dont lose them. the convex side should not come off unless you knock the studs out of the crossmember. Attached Images __________________ Dan <---(my name) 67 SWB C10 project "GEORGIA"-59 Brookwood 2dr wag...Next project-03 Tahoe 4x4 5.3 family ride-07 Hondur Accord, commuter car

07-26-2013, 06:40 AM	#18
67c10rustbuket Registered User Join Date: Apr 2011 Location: Mustang, Oklahoma Posts: 2,806	Re: Where to buy concave washers/shims on upper control arm??? Another pic I borrowed from the interweb.... stud,crossmember,convex(pressed),concave(loose),camber shims,control arm shaft. Attached Images __________________ Dan <---(my name) 67 SWB C10 project "GEORGIA"-59 Brookwood 2dr wag...Next project-03 Tahoe 4x4 5.3 family ride-07 Hondur Accord, commuter car



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07-26-2013, 07:14 AM	#19
slow-1 Registered User Join Date: May 2013 Location: Central NC Posts: 830	Re: Where to buy concave washers/shims on upper control arm??? A picture is worth 1k words...thanks for posting the pic...very helpful. Posted via Mobile Device __________________ 1972 Cheyene C-10 "Ole Green" My Grandfathers truck (early 70's to 1983) My first vehicle (1983) Original 350 (3 rebuilds) 700R4 from Bowtie Overdrives

07-26-2013, 05:22 PM	#20
oldno7 Registered User Join Date: Jan 2007 Location: Ill. Posts: 584	Re: Where to buy concave washers/shims on upper control arm??? The washers are in the mail and there is no charge, they should arive on monday according to the lady at the post office. Glad to help out, and what comes around goes around is how i see it. Hope your project goes good, oldno7 __________________ Hi everyone, It's nice to know there's other people just as crazy about these old trucks as I am. oldno7

09-20-2015, 11:35 PM	#21
Baker819 Registered User Join Date: Oct 2012 Location: WA Posts: 119	Re: Where to buy concave washers/shims on upper control arm??? I managed to loose just one of my concave washers. Any buddy have a spare they would sell me?

04-28-2017, 02:54 PM	#22
drmatera Registered User Join Date: Aug 2016 Location: Nicholson, Ga Posts: 134	Re: Where to buy concave washers/shims on upper control arm??? Any chance somebody can measure the OD, ID and thickness of the concave washer? I seem to have lost mine as well. Common problem, maybe we can come up with a part number for replacements. __________________ 1981 K10 (4.8 / 4L60E swap) 1982 C10 (5.3 / 4L80E swap) 1985 C20 Suburban (454 / 4L80E)

04-28-2017, 03:13 PM	#23
drmatera Registered User Join Date: Aug 2016 Location: Nicholson, Ga Posts: 134	Re: Where to buy concave washers/shims on upper control arm??? McMaster Carr Attached Images __________________ 1981 K10 (4.8 / 4L60E swap) 1982 C10 (5.3 / 4L80E swap) 1985 C20 Suburban (454 / 4L80E)

04-28-2017, 03:16 PM	#24
drmatera Registered User Join Date: Aug 2016 Location: Nicholson, Ga Posts: 134	Re: Where to buy concave washers/shims on upper control arm??? Can't read it very well so here is a link https://www.mcmaster.com/#spherical-washers/=17eawui __________________ 1981 K10 (4.8 / 4L60E swap) 1982 C10 (5.3 / 4L80E swap) 1985 C20 Suburban (454 / 4L80E)

05-22-2017, 03:57 PM	#25
7tee Registered User Join Date: Mar 2015 Location: Fletcher, N.C. Posts: 309	Re: Where to buy concave washers/shims on upper control arm??? I've just ordered these and I'll give feed back after they come...Ed __________________ 1970 C/10 350/T5 SWB stepper... 1979 Corvette 350/Auto T-top... 2010 Acura RL... 2015 2500HD Z-71 Silverado...

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