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01-06-2010, 11:19 PM
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#1 |
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Addicted to Rust
 
Join Date: Dec 2009
Location: Abbeville SC
Posts: 1,030
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Motor mounts
Are the clam shells that fit on the block the same for a small and big block? Jay
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Current trucks: (48 GMC100 320 inliner) Gone (48 Suburban in pieces) Sold 87 GMC CCSB 5.3 4l60E Daily Driver ECTA National record holder XO/PP We never really grow up, we just learn how to act in public. |
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01-07-2010, 07:27 PM
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#2 |
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Happy to be here
 
Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,021
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Re: Motor mounts
BBC guys?
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Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra" |
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01-07-2010, 08:40 PM
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#3 |
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Old Heap Driver
Join Date: Mar 2008
Location: Newport News, Va
Posts: 2,642
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Re: Motor mounts
Yes!.......A least they were for my swap.
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_____________________________ Bryan '99 Silverado 1500, 4.3, 5-speed, reg cab, short bed '50 Chevy 2DR Hard Top, 350/350, M2 Front End, 3:08 gear, cruiser. '40 F**d Sedan, all Chevy power, Heidt's front end, TCI rear, nice driver. |
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01-10-2010, 07:36 PM
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#4 |
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Registered User
Join Date: Nov 2008
Location: The land of fruits and nuts, Kingsburg CA
Posts: 44
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Re: Motor mounts
Yes. Pulled the 400 sbc out of my '77 and dropped a '75 bbc in. Clamshells bolted up and fit fine.
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'77 K20 LWB 454, NV4500, NP205, 4.10's rollin on 33's passin everything but a gas station. 
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01-10-2010, 10:14 PM
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#5 |
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Registered User
Join Date: Mar 2008
Location: red deer alberta
Posts: 777
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Re: Motor mounts
2wd and 4 wd are different ....
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01-10-2010, 11:17 PM
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#6 |
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Senior Member
Join Date: May 2004
Location: Binghamton, NY
Posts: 3,469
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Re: Motor mounts
2wd and 4wd have the same "clamshell" mounts. Old man had an 84 or something truck that was 2wd. 305 that barely ran, swapped in a 350 from an 81-82 4wd, and we didn't swap those mounts.
I've done 3 small block to big block swaps and never had to change anything.
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2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 4” SAS 1999 GMC Yukon 350/4L60 6" SAS |
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