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Re: Engine Compression (and ID) Specifications for 261 engines
tclederman #1087866 02/25/2015 4:05 PM
Joined: Sep 2001
Posts: 29,262
Jarvisburg, NC, USA
tclederman
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Bubba - Curmudgeon
tclederman
Bubba - Curmudgeon
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Joined: Sep 2001
Posts: 29,262
Jarvisburg, NC, USA

3835913 is a 1954/55 235 head (trucks in 54 and cars/trucks in 55, supposedly).

http://www.1954advance-design.com/Stovebolt-engine/casting-numbers.html

7.5:1 compression ratio

The head date casting code is under the valve cover on the manifold side (between 4th & 5th cylinder valves).

Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.
Re: Engine Compression (and ID) Specifications for 261 engines
tclederman #1088206 02/27/2015 5:48 AM
Joined: Apr 2002
Posts: 2,168
West of the 5th
F
Fox Offline
A teacher, but always an apprentice.
Fox
A teacher, but always an apprentice.
F Offline
Joined: Apr 2002
Posts: 2,168
West of the 5th
Is the 850 the head that usually came with 58-62 261s?
I may have one here. I'll look tomorrow and see what the cast number is.

1970 Chevrolet C10
Grandpa's -- My first truck -- In progress to shiny
Follow the build in the Project Journal
1950 Chevrolet 1-Ton Dually
"Ole Red Girl"
In the Stovebolt Gallery
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1951 GMC 9430 1 ton dually--Shiny! | 1972 Chevrolet C20- Rusty- the puzzle box lid for the C10 | 1962 AMC Rambler American- my wife's
Parts trucks-
1951 GMC 9300 | 1951-GMC 9430 | 1951- Chevrolet 1300
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