The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1969 - 1972 Blazers and Jimmys Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-30-2018, 09:19 PM   #1
T0ple55
Junior Member
 
Join Date: Apr 2014
Location: Arlington Wa
Posts: 45
Blazer body shim vs core support

Wondering which way would be the better way to go. I either need to shim my core support up or take body shims out to get my front fender and door alignment. Any input is appreciated.
__________________
72 GMC Suburban (dads)
69 SWB Chev (frame off father/son)
70 2wd Jimmy+69 4WD Blazer = PHASED
71 SWB stuffed in the barn
T0ple55 is offline   Reply With Quote
Old 05-31-2018, 12:47 PM   #2
SeventyOne
Registered User
 
Join Date: Mar 2007
Location: Castro Valley, Ca
Posts: 936
Re: Blazer body shim vs core support

Going to be really hard to diagnose problems like this but I know the B pilar alignment/shim is pretty critical.

First question though - do you have NEW body mounts in and is the top on?
SeventyOne is offline   Reply With Quote
Old 05-31-2018, 01:05 PM   #3
T0ple55
Junior Member
 
Join Date: Apr 2014
Location: Arlington Wa
Posts: 45
Re: Blazer body shim vs core support

Body mounts are brand new. Ordered one of the full rubber sets from classic heartbeat I believe. I replaced the shims exactly as the were before. The top will not be going back on.
__________________
72 GMC Suburban (dads)
69 SWB Chev (frame off father/son)
70 2wd Jimmy+69 4WD Blazer = PHASED
71 SWB stuffed in the barn
T0ple55 is offline   Reply With Quote
Old 05-31-2018, 01:09 PM   #4
SeventyOne
Registered User
 
Join Date: Mar 2007
Location: Castro Valley, Ca
Posts: 936
Re: Blazer body shim vs core support

hows the door to b-pillar alignment?

If thats good then keep moving forward towards the front of the truck.
SeventyOne is offline   Reply With Quote
Old 05-31-2018, 01:23 PM   #5
T0ple55
Junior Member
 
Join Date: Apr 2014
Location: Arlington Wa
Posts: 45
Re: Blazer body shim vs core support

B pillar alignment is good, was a little bit of a pain but got it in place
__________________
72 GMC Suburban (dads)
69 SWB Chev (frame off father/son)
70 2wd Jimmy+69 4WD Blazer = PHASED
71 SWB stuffed in the barn
T0ple55 is offline   Reply With Quote
Old 05-31-2018, 01:57 PM   #6
hemi43
Registered User
 
hemi43's Avatar
 
Join Date: Mar 2015
Location: Newcastle Ontario Canada
Posts: 1,002
Re: Blazer body shim vs core support

Tub/body shims get done first for correct door alignment. The last body mounts to be adjusted are the rad support ones. Do it out of sequence and you'll end up with a can of worms.
__________________
The one that dies with the most tools, wins !
hemi43 is offline   Reply With Quote
Old 05-31-2018, 03:18 PM   #7
chevyguy_72
Vintage Evil
 
chevyguy_72's Avatar
 
Join Date: Aug 2005
Location: Broomfield, CO
Posts: 959
Re: Blazer body shim vs core support

Are there any write ups on this? I just put mine back where they were as well... But am just starting to put doors etc on... and not sure what the PO might have done...
Thanks
__________________
Current Rides:
Vintage Evil - 72 Chevy C10 (Always a work in progress) Vintage Evil Build Thread
EvilK5 - 71 K5 Blazer
Evil Twin - 2006 Suzuki M109R
EvilDmax- 2015 GMC 2500 Denali Duramax
chevyguy_72 is offline   Reply With Quote
Old 05-31-2018, 03:48 PM   #8
SeventyOne
Registered User
 
Join Date: Mar 2007
Location: Castro Valley, Ca
Posts: 936
Re: Blazer body shim vs core support

It's written about in the factory assembly manual. Maybe someone can post a pic. Also I do recall seeing it in previous threads - try searching.
SeventyOne is offline   Reply With Quote
Old 05-31-2018, 07:56 PM   #9
T0ple55
Junior Member
 
Join Date: Apr 2014
Location: Arlington Wa
Posts: 45
Re: Blazer body shim vs core support

OK sooo. I'm going to go ahead and shim the core support then. Next question are there specific shims for accomplishing this, as mine had none before. Can I use body shims in the core support locations? What about some suburban/truck rubber mounting pads?
__________________
72 GMC Suburban (dads)
69 SWB Chev (frame off father/son)
70 2wd Jimmy+69 4WD Blazer = PHASED
71 SWB stuffed in the barn
T0ple55 is offline   Reply With Quote
Old 05-31-2018, 09:02 PM   #10
cleszkie
Senior Member
 
cleszkie's Avatar
 
Join Date: Feb 2003
Location: Santa Ana, CA
Posts: 2,053
Re: Blazer body shim vs core support

Quote:
Originally Posted by hemi43 View Post
tub/body shims get done first for correct door alignment. The last body mounts to be adjusted are the rad support ones. Do it out of sequence and you'll end up with a can of worms.
x2
cleszkie is offline   Reply With Quote
Old 06-06-2018, 03:19 PM   #11
1972 Banana
Registered User
 
1972 Banana's Avatar
 
Join Date: Nov 2006
Location: Goose Creek SC
Posts: 107
Re: Blazer body shim vs core support

Would love to see the factory procedure as well, anyone want to share?
1972 Banana is offline   Reply With Quote
Old 06-07-2018, 08:34 PM   #12
hemi43
Registered User
 
hemi43's Avatar
 
Join Date: Mar 2015
Location: Newcastle Ontario Canada
Posts: 1,002
Re: Blazer body shim vs core support

FWIW, it's been 3 years since the restoration, and I developed a small rattle in the driver's door latch area. I noticed the gap at the rear of the door was not parallel anymore and was wider at the top. I loosened the rear body mount on the driver's side as well as the one in front of it by the filler neck of the fuel tank. I added a 1/4" shim in both and tightened it back up. This was enough to get rid of the wide gap as well as the rattle by the latch.
__________________
The one that dies with the most tools, wins !
hemi43 is offline   Reply With Quote
Old 06-10-2018, 08:20 AM   #13
chevyguy_72
Vintage Evil
 
chevyguy_72's Avatar
 
Join Date: Aug 2005
Location: Broomfield, CO
Posts: 959
Re: Blazer body shim vs core support

Is this the page you guys are referring to? Not much info here...
Attached Images
 
__________________
Current Rides:
Vintage Evil - 72 Chevy C10 (Always a work in progress) Vintage Evil Build Thread
EvilK5 - 71 K5 Blazer
Evil Twin - 2006 Suzuki M109R
EvilDmax- 2015 GMC 2500 Denali Duramax
chevyguy_72 is offline   Reply With Quote
Old 06-12-2018, 05:28 PM   #14
chevyguy_72
Vintage Evil
 
chevyguy_72's Avatar
 
Join Date: Aug 2005
Location: Broomfield, CO
Posts: 959
Re: Blazer body shim vs core support

Anyone?
Quote:
Originally Posted by chevyguy_72 View Post
Is this the page you guys are referring to? Not much info here...
__________________
Current Rides:
Vintage Evil - 72 Chevy C10 (Always a work in progress) Vintage Evil Build Thread
EvilK5 - 71 K5 Blazer
Evil Twin - 2006 Suzuki M109R
EvilDmax- 2015 GMC 2500 Denali Duramax
chevyguy_72 is offline   Reply With Quote
Old 06-18-2018, 10:00 PM   #15
T0ple55
Junior Member
 
Join Date: Apr 2014
Location: Arlington Wa
Posts: 45
Re: Blazer body shim vs core support

I dont believe it is, looking for the alignment of fenders to doors. whether to shim the core support or take the body shims out
__________________
72 GMC Suburban (dads)
69 SWB Chev (frame off father/son)
70 2wd Jimmy+69 4WD Blazer = PHASED
71 SWB stuffed in the barn
T0ple55 is offline   Reply With Quote
Old 06-19-2018, 06:29 AM   #16
Woodsloafer
New Member
 
Join Date: Jun 2018
Location: Royalston, MA
Posts: 15
Re: Blazer body shim vs core support

Subscribed
Woodsloafer is offline   Reply With Quote
Old 06-20-2018, 04:09 PM   #17
hemi43
Registered User
 
hemi43's Avatar
 
Join Date: Mar 2015
Location: Newcastle Ontario Canada
Posts: 1,002
Re: Blazer body shim vs core support

Quote:
Originally Posted by T0ple55 View Post
I dont believe it is, looking for the alignment of fenders to doors. whether to shim the core support or take the body shims out
That has already been answered for you ! The core support shims will align the fenders to the front of the doors. It's really not rocket science. Don't touch the body tub shims unless you have door to body issues. Not trying to be rude, but if you can't visualize what needs to be done, then maybe it's best that you take it to someone that knows what to do.
__________________
The one that dies with the most tools, wins !
hemi43 is offline   Reply With Quote
Old 06-20-2018, 04:22 PM   #18
T0ple55
Junior Member
 
Join Date: Apr 2014
Location: Arlington Wa
Posts: 45
Re: Blazer body shim vs core support

Quote:
Originally Posted by hemi43 View Post
That has already been answered for you ! The core support shims will align the fenders to the front of the doors. It's really not rocket science. Don't touch the body tub shims unless you have door to body issues. Not trying to be rude, but if you can't visualize what needs to be done, then maybe it's best that you take it to someone that knows what to do.
Yeah we got that much, my response was to the image members were looking for related to @seventyone and @bananas comment about it being in the factory assembly process
__________________
72 GMC Suburban (dads)
69 SWB Chev (frame off father/son)
70 2wd Jimmy+69 4WD Blazer = PHASED
71 SWB stuffed in the barn
T0ple55 is offline   Reply With Quote
Old 06-21-2018, 10:42 AM   #19
chevyguy_72
Vintage Evil
 
chevyguy_72's Avatar
 
Join Date: Aug 2005
Location: Broomfield, CO
Posts: 959
Re: Blazer body shim vs core support

Quote:
Originally Posted by T0ple55 View Post
Yeah we got that much, my response was to the image members were looking for related to @seventyone and @bananas comment about it being in the factory assembly process
And i was looking for the manual pages because my tub has been removed from frame as well as had floor etc patches welded in by the PO... so trying to figure out if my door alignment issues are related to missing shims from when they pulled the body and left them out or due to the repair work... so if someone can point me to the correct page in that manual or the correct manual it would be appreciated.
Thanks
__________________
Current Rides:
Vintage Evil - 72 Chevy C10 (Always a work in progress) Vintage Evil Build Thread
EvilK5 - 71 K5 Blazer
Evil Twin - 2006 Suzuki M109R
EvilDmax- 2015 GMC 2500 Denali Duramax
chevyguy_72 is offline   Reply With Quote
Old 06-21-2018, 12:19 PM   #20
SeventyOne
Registered User
 
Join Date: Mar 2007
Location: Castro Valley, Ca
Posts: 936
Re: Blazer body shim vs core support

Let me dig out my book...
SeventyOne is offline   Reply With Quote
Old 06-21-2018, 12:45 PM   #21
chevyguy_72
Vintage Evil
 
chevyguy_72's Avatar
 
Join Date: Aug 2005
Location: Broomfield, CO
Posts: 959
Re: Blazer body shim vs core support

Quote:
Originally Posted by SeventyOne View Post
Let me dig out my book...
Would appreciate that...
__________________
Current Rides:
Vintage Evil - 72 Chevy C10 (Always a work in progress) Vintage Evil Build Thread
EvilK5 - 71 K5 Blazer
Evil Twin - 2006 Suzuki M109R
EvilDmax- 2015 GMC 2500 Denali Duramax
chevyguy_72 is offline   Reply With Quote
Old 06-21-2018, 01:09 PM   #22
A1971Blazer
Senior Member
 
A1971Blazer's Avatar
 
Join Date: Nov 2013
Location: East Tennessee
Posts: 984
Re: Blazer body shim vs core support

This is from the factory assembly manual
Name:  IMG_0425.jpg
Views: 71
Size:  55.3 KB
__________________
1970 Chevrolet K/5 Blazer
1972 Chevrolet K/5 Blazer
.............
A1971Blazer is offline   Reply With Quote
Old 06-21-2018, 01:10 PM   #23
SeventyOne
Registered User
 
Join Date: Mar 2007
Location: Castro Valley, Ca
Posts: 936
Re: Blazer body shim vs core support

thats it.
SeventyOne is offline   Reply With Quote
Old 06-21-2018, 06:04 PM   #24
chevyguy_72
Vintage Evil
 
chevyguy_72's Avatar
 
Join Date: Aug 2005
Location: Broomfield, CO
Posts: 959
Re: Blazer body shim vs core support

Quote:
Originally Posted by A1971Blazer View Post
This is from the factory assembly manual
Attachment 1795132
Cool thanks
__________________
Current Rides:
Vintage Evil - 72 Chevy C10 (Always a work in progress) Vintage Evil Build Thread
EvilK5 - 71 K5 Blazer
Evil Twin - 2006 Suzuki M109R
EvilDmax- 2015 GMC 2500 Denali Duramax
chevyguy_72 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:33 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com