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Click on image for the lowdown. 
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7 members (chevy51truck, Gdads51, dt235sd, Otto Skorzeny, JW51, MickeyP, LAROKE),
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Global Mod,
Mod | | | Forums66 Topics128,049 Posts1,055,698 Members48,426 | | 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
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Jul 2005 Posts: 117 Wrench Fetcher | | Wrench Fetcher Joined: Jul 2005 Posts: 117 | I want to know how to determine what size six cyl engine my truck has in it. It is a 1956 Chevy 6500 with a six cylinder motor. I want to determine if it is original and what size it is. The data plate gives a GVW of 16,000 lbs. and lists the horsepower ratings for both the 235 and the 261. What numbers do I need to look for to find the size and the year? Thanks for the help. | | |
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