Body mount and alignment question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rockyrivermark · 02-16-2017, 11:06 PM

In the process of restoring a 1970 c10
I installed new cab mounts today. Old ones were pretty shot.
Question is:
The front mounts came with shim plates, none for the back.
I have some door, fender and hood alignment issues im working on.
What area of alignment should I be checking to see if the shims are needed on the front mounts ?
Also are shims ever used on the rear mounts
Thanks

*randy500* · 02-16-2017, 11:45 PM

Now that you mention it, never seen the rear shimmed just the front. The square ones are the shims on the front and I think I have only seen one thickness on those too

LongBox · 02-17-2017, 12:37 AM

There's a good thread on this issue right now. It's about door fit issues. Just scroll down the page, or maybe the second page, and it will show up.

snipescastle2 · 02-19-2017, 05:24 PM

Are you using stock rubber mounts or poly? I made the mistake of buying the poly ones, they sit much shorter than the originals, and once I installed my bed on the chassis, it was very evident the body lines would not align. I ended up making nylon spacers to place in between the poly mounts and the chassis to make up the difference. So, in hindsight, I should have went with the stock type, not to mention the poly ones squeak like crazy. The bed mounts only require those 2"x 2"x 1/4"square rubber gaskets also.
Just my .02
Ben

snipescastle2 · 02-19-2017, 05:30 PM

Are you using stock rubber mounts or poly? I made the mistake of buying the poly ones, they sit much shorter than the originals, and once I installed my bed on the chassis, it was very evident the body lines would not align. I needed up making nylon spacers to place in between the poly mounts and the chassis to make up the difference. So, in hindsight, I should have went with the stock type, not to mention the poly ones squeak like crazy. The bed mounts only require those 2"x 2"x 1/4"square rubber gaskets also.
Just my .02
Ben

rockyrivermark · 02-19-2017, 07:45 PM

Quote:

Originally Posted by snipescastle2

Are you using stock rubber mounts or poly? I made the mistake of buying the poly ones, they sit much shorter than the originals, and once I installed my bed on the chassis, it was very evident the body lines would not align. I needed up making nylon spacers to place in between the poly mounts and the chassis to make up the difference. So, in hindsight, I should have went with the stock type, not to mention the poly ones squeak like crazy. The bed mounts only require those 2"x 2"x 1/4"square rubber gaskets also.
Just my .02
I bought the rubber mounts since I read up on the squeaks. I hear there is a grease for that but I didn't want to mess with it. Stayed stock rubber
Ben

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snipescastle2 · 02-19-2017, 08:17 PM

Yeah that grease may help with squeaks but still need spacers. Good move staying with the stock type.
Ben

02-16-2017, 11:06 PM	#1
rockyrivermark Registered User Join Date: Apr 2011 Location: Fairview Park, Ohio Posts: 1,030	Body mount and alignment question In the process of restoring a 1970 c10 I installed new cab mounts today. Old ones were pretty shot. Question is: The front mounts came with shim plates, none for the back. I have some door, fender and hood alignment issues im working on. What area of alignment should I be checking to see if the shims are needed on the front mounts ? Also are shims ever used on the rear mounts Thanks

02-16-2017, 11:45 PM	#2
randy500 Account Suspended Join Date: Jul 2016 Location: Tacoma, WA Posts: 6,873	Re: Body mount and alignment question Now that you mention it, never seen the rear shimmed just the front. The square ones are the shims on the front and I think I have only seen one thickness on those too

02-17-2017, 12:37 AM	#3
LongBox Registered User Join Date: Sep 2016 Location: Vancouver BC Posts: 784	Re: Body mount and alignment question There's a good thread on this issue right now. It's about door fit issues. Just scroll down the page, or maybe the second page, and it will show up. __________________ Rick -69 GMC 910 Long Box, 350 -98 Chev Silverado 1500, 350 Vortec 4L60e -08 Mustang GT Convertible

02-19-2017, 05:24 PM	#4
snipescastle2 Registered User Join Date: Mar 2009 Location: WARRENSBURG,MISSOURI,64093 Posts: 1,518	Re: Body mount and alignment question Are you using stock rubber mounts or poly? I made the mistake of buying the poly ones, they sit much shorter than the originals, and once I installed my bed on the chassis, it was very evident the body lines would not align. I ended up making nylon spacers to place in between the poly mounts and the chassis to make up the difference. So, in hindsight, I should have went with the stock type, not to mention the poly ones squeak like crazy. The bed mounts only require those 2"x 2"x 1/4"square rubber gaskets also. Just my .02 Ben __________________ "Persistence is the twin sister of Excellence.one is a matter of quality,the other, a matter of time" “Serious Black” my 1971 Short Bed Fleetside Sold to an outstanding man in Lees Summit,Mo. “Gone, but by no means,Forgotten” Last edited by snipescastle2; 02-19-2017 at 05:30 PM.

02-19-2017, 05:30 PM	#5
snipescastle2 Registered User Join Date: Mar 2009 Location: WARRENSBURG,MISSOURI,64093 Posts: 1,518	Re: Body mount and alignment question Are you using stock rubber mounts or poly? I made the mistake of buying the poly ones, they sit much shorter than the originals, and once I installed my bed on the chassis, it was very evident the body lines would not align. I needed up making nylon spacers to place in between the poly mounts and the chassis to make up the difference. So, in hindsight, I should have went with the stock type, not to mention the poly ones squeak like crazy. The bed mounts only require those 2"x 2"x 1/4"square rubber gaskets also. Just my .02 Ben __________________ "Persistence is the twin sister of Excellence.one is a matter of quality,the other, a matter of time" “Serious Black” my 1971 Short Bed Fleetside Sold to an outstanding man in Lees Summit,Mo. “Gone, but by no means,Forgotten”

02-19-2017, 08:17 PM	#7
snipescastle2 Registered User Join Date: Mar 2009 Location: WARRENSBURG,MISSOURI,64093 Posts: 1,518	Re: Body mount and alignment question Yeah that grease may help with squeaks but still need spacers. Good move staying with the stock type. Ben __________________ "Persistence is the twin sister of Excellence.one is a matter of quality,the other, a matter of time" “Serious Black” my 1971 Short Bed Fleetside Sold to an outstanding man in Lees Summit,Mo. “Gone, but by no means,Forgotten”



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