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Click on image for the lowdown. 
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| | | Forums66 Topics128,082 Posts1,055,961 Members48,430 | | 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!
| | THANKS!
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: Dec 2004 Posts: 1,897 Shop Shark | | Shop Shark Joined: Dec 2004 Posts: 1,897 | how about by the year and or casting numbers?
1955 287
1956 316
1957 347
1958 370
1959 389
1958 and 1959 gmc engines were debored pontiac 370 and 389 to come up with 336 inches. | | |
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