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Re: Another Proud '52 1-ton owner
Cheon57 #1360475 Fri May 15 2020 11:14 PM
Joined: Sep 2001
Posts: 30,290
ace skiver
“I have all the engine numbers except inside the valve cover but they don't quite match up exactly to posted numbers.“

What are the codes that you have (besides the Engine Serial Number, attached a few posts above this)?


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: Another Proud '52 1-ton owner
Cheon57 #1360502 Sat May 16 2020 01:43 AM
Joined: Jun 2011
Posts: 3,597
Shop Shark
That is not a GMC number, Chevy, someone on here will now what it is.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Re: Another Proud '52 1-ton owner
Cheon57 #1360512 Sat May 16 2020 02:08 AM
Joined: Sep 2001
Posts: 30,290
ace skiver
F 722 A

F = Flint MI engine plant
7 = 7th (I think it could/should have been 07?)
2 = February
2 = 1962
A = Regular Production 235 high-pressure engine with standard 3-speed transmission

Maybe someone else will decode/correct/confirm this?

The head/block casting codes will help to confirm/correct this interpretation.


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: Another Proud '52 1-ton owner
tclederman #1360580 Sat May 16 2020 03:29 PM
Joined: Aug 2018
Posts: 246
D
Shop Shark
I believe that decodes as:
F = Flint, MI
7 = July
22 = 22nd day of that month
A (quoting the '58 Chevy Master Parts Catalog) = "Regular '235' -6 cylinder" (with passenger car models listed as original service)

The year was dropped from the later serial numbers from '57 onward, so best indication of year is from the block casting date code located above the starter. This decode is made based on the '58 Chevy Master Parts Catalog, pp 12-14.

Last edited by drdoug; Sat May 16 2020 03:32 PM.
Re: Another Proud '52 1-ton owner
Cheon57 #1360627 Sat May 16 2020 10:12 PM
Joined: Apr 2019
Posts: 17
C
Cheon57 Offline OP
New Guy
The number behind the starter is Con 4 G177.
Here are the numbers off the head and the one on the block between the distributer and the fuel pump.

Attached Files
IMG_20200514_163750497.jpg (425.55 KB, 52 downloads)
IMG_20200514_163715112.jpg (433.05 KB, 52 downloads)
Re: Another Proud '52 1-ton owner
Cheon57 #1360629 Sat May 16 2020 10:36 PM
Joined: Aug 2018
Posts: 246
D
Shop Shark
Starting with the codes over the starter... you can disregard the CON 4. That just tells what conveyor line was used in the engine foundry.

The digits that follow decode the date as G = July, 17 = 17th day of the month, and 7 = 1957.

That is consistent with the block casting number, since 3837004 was used '55-'57, and it is a 235 as was indicated in the earlier post by the stamped engine number.

Interesting, the head casting 3836850 is a 261 head ('54-'62). Nothing special about that other than it was just a bit lower compression (somewhat larger combustion chamber) compared to the head casting originally used on the '57 235, and has 3 pairs of holes drilled into the water jacket that were needed to properly cool the siamesed cylinders in the 261. They are simply blocked off by the head gasket and 235 block. It's more common to find the standard '57-'62 235 head casting on 261s than the other way around, but there is nothing wrong with that. If you are interested in finding the date code for the head, it is located under the valve cover (valve cover has to come off to see it), driver's side, toward the back.

Cheers!

Last edited by drdoug; Sat May 16 2020 10:40 PM.
Re: Another Proud '52 1-ton owner
Cheon57 #1366078 Tue Jun 23 2020 02:57 PM
Joined: Jan 2016
Posts: 32
B
Wrench Fetcher
I think you'd really like the 19.5"s on that truck. I have the same truck in GMC and the 19.5s really fill out the fenders and help with mph as well.


1950 GMC 250 Pickup
1965 Mustang Convertible
1972 K5 Blazer
1973 Buick Centurion 455 Convertible
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