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Click on image for the lowdown. 
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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
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#83508 09/28/2007 9:57 PM | Joined: Aug 2002 Posts: 455 Shop Shark | | Shop Shark Joined: Aug 2002 Posts: 455 | If you visually compare the combustion chambers you can see the smaller volume of the 848 head. It has the highest stock compression ratio of all 235/261 heads.
Rocker arms are the same for late 235 and 261 heads, according to the shop manual. | | |
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