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#1055524 Thu Sep 11 2014 11:31 PM
Joined: Mar 2011
Posts: 21
C
cuz Offline OP
New Guy
hi again I just got a inline 6 cylinder give to me the man said it was a 265 I looked up the block casting numbers 3835911 and head casting numbers 3835913 it states a 235 mfg from 1954 and 1955 there is a big difference in cam and oil flow even water pump .the serial number on the machined surface is c216743f55s cant find any references to this block serial number .block casting numbers are con 3 L214 and gm head has con 12 A35. trying to pinpoint year mfg .all help appreciated .

cuz #1055534 Thu Sep 11 2014 11:57 PM
Joined: Sep 2001
Posts: 31,564
Bubba - Curmudgeon

It is a little hard reading your post due to no capital letters, and odd placement of "."s, and long sentences. I think this is some help in IDing your 265 which is a 235.

C216743F55S

C = ? (might that be a number/digit?)
216743 = (should be seven digits) = 215743 out of that plant that model year
F = Flint, MI plant
55 = 1955 first-series truck
S = 235 engine in a 4000 series truck

http://www.1954advance-design.com/chev-specs/1955-1st-Chevrolet-t-ser.pdf

CON 3 = Conveyor #3
L214
L = 12 = December
21 = 21st
4 = 1954
(an end of the year block)

C12 = Conveyor #12
A35
A = 1 = January
3 = 3rd
5 = 1955

What does this mean: . . . there is a big difference in cam and oil flow even water pump . . .


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
cuz #1055535 Fri Sep 12 2014 12:00 AM
Joined: May 2006
Posts: 8,490
L
Master Gabster
According to the serial number, it is a 235 from a First Series '55 1 1/2 ton truck. The "con 3 L214" casting number you found is the casting date, it breaks down like this; Con 3- Conveyor 3. That is the line then engine was cast on. L314- December,21st day, 1954.

Last edited by LONGBOX55; Fri Sep 12 2014 12:01 AM.

Bill Burmeister
cuz #1055538 Fri Sep 12 2014 12:14 AM
Joined: Sep 2001
Posts: 31,564
Bubba - Curmudgeon
The 1955-1st truck engine had the older higher-mounted water pump (as used on older 235 engines and all 216 engines).

3835911 was used on blocks from 53-55st trucks and Corvette 235s

3835913 was used on 54 and 55 heads

Last edited by tclederman; Fri Sep 12 2014 12:20 AM.

Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
cuz #1055761 Fri Sep 12 2014 11:42 PM
Joined: Mar 2011
Posts: 21
C
cuz Offline OP
New Guy
hay thanks u all I read on line that a 55 had a larger cam journals and a larger water pump that the impeller fits in the block .I haven't taken the pump off but I am going to for rebuilding .the article stated also the55 had a full pressure flow oil system the 54 has a spray .all info on this is greatly appreciated .

cuz #1055766 Fri Sep 12 2014 11:59 PM
Joined: Sep 2001
Posts: 31,564
Bubba - Curmudgeon

I think that is right, cuz. The internal water pump started with 1955-2nd Task Force Chevrolet trucks.

What year truck is that engine in? If it is an earlier truck, that water pump is located in a location that reduces cooling efficiency and the fan blade might be touch the radiator or harmonic balancer (depending on the fan blade).


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
cuz #1055803 Sat Sep 13 2014 02:10 AM
Joined: Mar 2010
Posts: 10,104
5
'Bolter
Originally Posted by cuz
hay thanks u all I read on line that a 55 had a larger cam journals and a larger water pump that the impeller fits in the block .I haven't taken the pump off but I am going to for rebuilding .the article stated also the55 had a full pressure flow oil system the 54 has a spray .all info on this is greatly appreciated .

54 235s are also full pressure engines. They did have smaller cam journals than later engines.

Last edited by 52Carl; Sat Sep 13 2014 02:12 AM.

Moderated by  Woogeroo 

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