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What is my engine?
#1362080 Tue May 26 2020 09:08 PM
Joined: Sep 2018
Posts: 17
R
Rbregn Offline OP
New Guy
I have a 1954 W6400 series. I assumed it had a 261 in it. I looked at the boss where the engine serial number is. Now I am confused. What is stamped on the boss is FI03IJ. What does that mean? I need a new starter bendix and just wanted to make sure I got the right one, before taking the starter out. The Starter ID is Delco Remy 107634 6H6.

Re: What is my engine?
Rbregn #1362085 Tue May 26 2020 09:36 PM
Joined: Sep 2001
Posts: 30,328
ace skiver
Let's assume you have a 1954 high-pressure 235/261 engine that has a valve cover that attaches to the head with screws through a bottom side lip (not two nuts attaching to studs through the top of the valve cover).

Here are locations of codes. [1954advance-design.com]
Find and post the following codes:
engine serial number - you already posted
block casting code
block date casting code
head casting code
head date casting code (you have to remove the valve cover).


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]
Re: What is my engine?
Rbregn #1362089 Tue May 26 2020 09:50 PM
Joined: Sep 2018
Posts: 17
R
Rbregn Offline OP
New Guy
Yes, it is a 235 or a 261. How do I tell which. In theory it should be a 261. How do I tell? The engine code is gibberish

Re: What is my engine?
Rbregn #1362090 Tue May 26 2020 09:54 PM
Joined: Sep 2001
Posts: 30,328
ace skiver
Please find and post those casting codes.

Those casting codes will designate/confirm the engine size.

The date casting codes will tell us the year of the head and the year of the block.

When we know the block date casting code, we can then decode your Engine Serial Number.


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]
Re: What is my engine?
Rbregn #1362136 Wed May 27 2020 12:41 AM
Joined: Sep 2019
Posts: 51
C
Wrench Fetcher
Easy way to tell if it's a 261 is look for the captains bars cast into block. Deves tech net .com has good info on identification.

Re: What is my engine?
Rbregn #1362139 Wed May 27 2020 12:49 AM
Joined: Sep 2019
Posts: 51
C
Wrench Fetcher
Jimcarteryruckparts.com has a technical article on the 261 c.i. with pictures

Re: What is my engine?
Rbregn #1362142 Wed May 27 2020 12:53 AM
Joined: Aug 2018
Posts: 249
D
Shop Shark
The engine stamped code indicates it's a '57 or newer block. If I have the digits right, it translates to F= Flint MI manufacture, 10 = October, 31 = day of the month (a Halloween engine!), and J is the code for a '58 or later 235 engine originally in service in a truck, Thriftmaster 235 with 3-speed transmission. Since the engine serial number doesn't carry a year code (after '56), the best way to date the block is from the casting date code sort of behind and above the starter. You will see a series of raised digits staring with something like CON4, which is only the conveyor that he engine went down in the foundry - doesn't help - but the next 4 to 6 digits can be decoded to determine the engine casting date. This info comes from the '58 Chevy Master Parts Catalog.

Doug

Last edited by drdoug; Wed May 27 2020 12:55 AM.
Re: What is my engine?
Rbregn #1362146 Wed May 27 2020 01:12 AM
Joined: Sep 2001
Posts: 30,328
ace skiver
What is the block date casting code?

What is the head date casting code?

Those locations are shown at the link in my first post, above.

They will tell you/us the size and year (of both the block and the head).


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]
Re: What is my engine?
Rbregn #1362302 Wed May 27 2020 09:27 PM
Joined: Dec 2018
Posts: 33
F
Wrench Fetcher
once got catalogs from that supplier in phoenix ...patrick h dykes..? learned more about engine ID there than anywhere i know of...also told how to get an updated saginaw tranny fully synchronized ! nother story !

Re: What is my engine?
Rbregn #1362303 Wed May 27 2020 09:34 PM
Joined: Dec 2018
Posts: 33
F
Wrench Fetcher
one other detail on 261 s that big remote oil filter uses 2 --1/2 inch pipe thread holes in the drivers side of the block on later models that is a give away along with captains bars

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