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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: 4,193
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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 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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