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Click on image for the lowdown. 
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| | | Forums66 Topics128,126 Posts1,056,353 Members48,441 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
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#26690 04/16/2005 2:42 AM | Joined: Nov 2004 Posts: 1,552 Shop Shark | | Shop Shark Joined: Nov 2004 Posts: 1,552 | I have a '66 C-10 with a factory 327cid with a factory SM420. I also have a '66 C-20 with a factory straight six with a factory SM420. The factory SM420 will bolt directly to a small block Chevy that is set up for a four-on-the-floor manual transmission arrangement. | | |
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