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02-19-2012, 06:05 PM
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#1 |
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Registered User
Join Date: Jul 2002
Location: Chesnee SC
Posts: 254
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Did A Shim Come Factory Under The Automatic Trans Mount?
I have a 71 C-10 I'm converting to an automatic with a 350 turbo. Did a factory shim come under the mount? I bought a crossmember from a guy and he gave it to me with the crossmember. It is retangular shaped and has the 2 slots for the bolts an its about 1/8" thick. It looks to me like a factory stamp piece and not made by a person. I didn't know if these trucks come factory with this or not. Any Ideas?
Thanks |
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02-19-2012, 06:53 PM
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#2 |
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Senior Member
 
Join Date: Feb 2011
Location: Corona, CA
Posts: 1,842
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Re: Did A Shim Come Factory Under The Automatic Trans Mount?
Hey Bryan,
My 1970 did....
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MusicMan70 1961 GMC Suburban |
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02-19-2012, 07:25 PM
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#3 |
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454 MAKES IT ROAR
Join Date: Jan 2008
Location: Essex, U.K
Posts: 2,701
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Re: Did A Shim Come Factory Under The Automatic Trans Mount?
Mine too...
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Nigel. An American living in a British body. 1971 Chevy Cheyenne 10 454 "In a time of universal deceit, telling the truth becomes a revolutionary act." - George Orwell "When injustice becomes law, resistance becomes duty" - Thomas Jefferson No more pain. 03.12.60 -- 12.28.10 http://www.youtube.com/Eightbanger |
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02-19-2012, 08:15 PM
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#4 |
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Registered User
Join Date: May 2010
Location: Edmonton, Alberta
Posts: 3,844
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Re: Did A Shim Come Factory Under The Automatic Trans Mount?
Interesting, I have probably disassembled 10 or more of these trucks and never come across a shim there. Learn something new everyday on this site
 Posted via Mobile Device
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--------------------------------------------------------------- Jason. 68’ GMC shortbox https://67-72chevytrucks.com/vboard/...d.php?t=794201 72' 2WD Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=425385 67' LongBox C-10 http://67-72chevytrucks.com/vboard/s...d.php?t=691845 InstaGram ybnorml67 |
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02-19-2012, 08:24 PM
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#5 |
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Registered User
Join Date: Jul 2002
Location: Chesnee SC
Posts: 254
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Re: Did A Shim Come Factory Under The Automatic Trans Mount?
The one I have is shaped different. I can see the image on the crossmember where it was. It went between the mount and crossmember instead of the transmission and mount like the one pictured.
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02-19-2012, 08:28 PM
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#6 |
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Registered User
Join Date: Jun 2008
Location: Moss Point,Ms.
Posts: 1,439
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Re: Did A Shim Come Factory Under The Automatic Trans Mount?
My 68,C-10 has one between the trans and rubber mount.
It's a t-400. Mike. 
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02-20-2012, 09:54 AM
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#7 |
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Registered User
Join Date: Dec 2009
Location: Atlanta, Ga.
Posts: 1,050
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Re: Did A Shim Come Factory Under The Automatic Trans Mount?
Anybody know WHY they were used?
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I don't think we get smarter as we get older. We just run out of Stupid things to do. |
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02-20-2012, 12:21 PM
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#8 |
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Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: Did A Shim Come Factory Under The Automatic Trans Mount?
I have used shims to change the driveshaft angle before so I assume that they were used to correct the driveshaft angle when necessary.
Jim
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1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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02-20-2012, 01:30 PM
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#9 |
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Senior Moment
Join Date: Mar 2002
Location: Pittsburg Ca
Posts: 4,185
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Re: Did A Shim Come Factory Under The Automatic Trans Mount?
My 70 also has one. It was there when I pulled the Trans for rebuild so I put it back.
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1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565 |
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02-20-2012, 02:44 PM
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#10 |
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Senior Member
Join Date: May 2010
Location: Wisconsin & Arizona
Posts: 4,852
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Re: Did A Shim Come Factory Under The Automatic Trans Mount?
There's one in my 69 also. It's between the trans and the mount. The truck is a C20 with a 350 and TH400. It's original to the truck.
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