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Click on image for the lowdown. 
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| | | Forums66 Topics128,042 Posts1,055,501 Members48,424 | | 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!
| | | | Joined: Apr 2010 Posts: 362 Shop Shark | | Shop Shark Joined: Apr 2010 Posts: 362 | Are you sure it's a 256 or was he saying a 250 6 cyclinder. I had a 66 GMC with the 250 and it is a sweet little running engine. I know they made that engine for a good while because that family of engine was in the cars for chevy up into the early 70's. Larry
58 gmc 100 with 350 sbc
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