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#616058 - Tue Feb 02 2010 05:52 PM 235 Engine Identification  
Scout  Offline
New Guy
Joined: Feb 2006
Posts: 16
Bellevue, Washington
Hi All,

I have a 1953 3600, but it does not have the original 216ci engine. Rather, the engine is a 235ci. The most I've been able to determine is that the engine is a standard 235 model and was made on Feb. 6th, between 1957 and 1962. Apparently, from 1957 on forward, chevy 235ci engines stopped using serial numbers.

So, how do I determine the actual year of production for this engine? I have the following information from the engine block: Casting # = 3769716, Engine ID = F0206A, and two other strange things cast into the block and located below the Engine ID boss --> They are CON 4 and B52.

Can anybody shine some light on my confusion?

Thank you

#616065 - Tue Feb 02 2010 06:00 PM Re: 235 Engine Identification [Re: Scout]  
Hotrod Lincoln  Online
Extreme Gabster
Joined: Feb 2004
Posts: 14,808
Dellrose, TN
There is a machined pad just behind the distributor with a stamped number on it. The letter prefix at the beginning of the stamped number should identify the year of manufacture, and other details about that specific engine. There are several websites available with engine number decoding information, just google "Chevrolet engine numbers".

EDIT: Try this link:

Better re-check that casting number- - - -you might have a 261 engine instead of a 235. If so, that's a real find! The casting number you list differs one digit from either a 235 or a 261 number.

Found it! The Inliners' site lists your casting number as a 60/61 truck 235.

Last edited by Hotrod Lincoln; Tue Feb 02 2010 06:19 PM.

The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!

#616089 - Tue Feb 02 2010 06:43 PM Re: 235 Engine Identification [Re: Hotrod Lincoln]  
waldo53  Offline
Shop Shark
Joined: Dec 2006
Posts: 1,707
You're right about the serial no.s after '57, they just don't help much in ID'ing your engine. But, I think the B52 marking tells us the story, cast date of Feb 5, 1962.

If that's wrong, someone else will surely set the record straight.

#616154 - Tue Feb 02 2010 10:08 PM Re: 235 Engine Identification [Re: waldo53]  
tclederman  Online
Joined: Sep 2001
Posts: 25,158
Jarvisburg, NC

I think that the 3769716 block casting code (235 ci block) was used from 1958-63.

As waldo53 posted, the date casting code is the clincher (1962).

1954 3106 Carryall Suburban - part of the family for 46 years
1954 3104 5-window pickup w/Hydra-Matic
Z-series (54/55) GMC 350 (2-ton) COE
If you have to stomp on your foot-starter, either you, or your starter, or your engine, has a problem.

#619874 - Sun Feb 14 2010 07:54 PM Re: 235 Engine Identification [Re: Scout]  
BROTT  Offline
New Guy
Joined: Jan 2010
Posts: 11
hello all my first post, want to know what year my 235 is cast# 3886848 eng# F0408J

#619884 - Sun Feb 14 2010 08:14 PM Re: 235 Engine Identification [Re: BROTT]  
LONGBOX55  Offline
Master Gabster
Joined: May 2006
Posts: 9,470
The A code in the serial number denotes it's a Passenger application.

Bill Burmeister

#630830 - Sun Mar 21 2010 03:59 PM Re: 235 Engine Identification [Re: LONGBOX55]  
Scout  Offline
New Guy
Joined: Feb 2006
Posts: 16
Bellevue, Washington
Thanks to all for your help and information!

Looks like the engine block was cast in Flint, Michigan on February 5th, 1960/61/62 (conflicting websites abound) and that its intended role was "Standard" (as designated by the 'A' serial number suffix).

So this little truck rolled along for almost a decade and then had its original 216 replaced by a plain jane 235.

Excellent nostalgia!

#677218 - Sun Sep 12 2010 01:46 AM Re: 235 Engine Identification [Re: Scout]  
fosters51deluxe5  Offline
Shop Shark
Joined: Apr 2010
Posts: 165
NE tacoma, Wa
hi all,
i have a 51 chev 5 window. it also has a 235. dont have the casting number but next to the distributor is #FO215JC. can anyone tell me what year the engine is from?? thanks

gig harbor wa

#677242 - Sun Sep 12 2010 04:00 AM Re: 235 Engine Identification [Re: BROTT]  
hoyt  Offline
Shop Shark
Joined: Jun 2005
Posts: 391
Kirkwood, MO

Where was the casting number 3886848 found? The block casting number reference that I use do not have that number. However, 3836848 is the cylinder head number for most 1956 and later 235 engines. Look at this serial number reference for the FO408J decoding. The engine casting number is on the lower forward passenger's side of the block. The casting date code on the block by the starter is also useful. Look at Tim's great site for more useful information.


#686489 - Fri Oct 15 2010 10:39 PM Re: 235 Engine Identification [Re: hoyt]  
nrdesieyes  Offline
Shop Shark
Joined: Sep 2010
Posts: 352
Santa Cruz, CA
Hey all, I'm totally perplexed by this one. A guy is selling what he thinks is a 1952 Chevy 235. The numbers on it are:


I can't find either "3701887" or "375583" on the list of casting numbers at or

Any ideas on what these numbers should be telling me? What the heck is this motor?


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