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Need engine ID help
#1289982 Wed Dec 05 2018 07:56 PM
Joined: Dec 2018
Posts: 6
New Guy project acquired which presents some new challenges. This is my first truck and first inline 6. I'm used to small blocks and some oddball twincam stuff. There is a great deal of conflicting information on the web and I was hoping I could get some clarity on what I've started working on.
Truck is titled and was sold as a 1950 with a correct 216. Turns out it's a bit of a frankenstein which is probably not that uncommon.
Here are some numbers as well as "anatomical" facts to help.
Casting number is 3701481 (My current research indicates 1953-1954 235 ci)
Conveyor number 3 D 15 3 (conveyor 3 April 15 1953 )
Serial number LAQ2I5I07 (poorly stamped but I've cleaned it and it is correct..those are I's not 1's......not sure on this one but maybe part of it indicates powerglide trans on passenger car ?)
Head casting number 3701887 GM 9 in the vicinity
Conveyor number on head con12 D 16 3 (conveyor 12 April 16 1953----head and block made one day apart so they probably are an original pairing)
Short side cover not the tall one. Has the "old style" valve cover w/ two acorn nuts. Horn mounted on exhaust manifold. Oil bath filter. Coil more toward rear rather than center.
By the way....this thing is currently mated to a 4 speed (floor) that I have not identified as to date, etc..

So what do I have exactly as best you can tell from this information ? Is this in fact a 235 and not a 216 ? Babbitt bearings ? Splash oiler ? Any other pertinent info I should know ?
Thanks in advance for any guidance/help !

Re: Need engine ID help
LegacyPaddock #1289996 Wed Dec 05 2018 09:06 PM
Joined: Mar 2005
Posts: 141
Shop Shark
The 216 and 235 engines that do not have full pressure oiling have an oil distributor valve. The oil distributor valve is behind the tin plate held on by 3 screws on the left side of the engine -center - lower. (below & behind exhaust)
The oil distributor valve indicates the engine has dippers, and all engines with dippers have the babbited connecting rods and inserts. Full-pressure engines do not have this valve.

Attached Files
Oil Distributor Valve (1).jpg (80.83 KB, 102 downloads)
216-235babbitpoundr ID .jpg (35.05 KB, 101 downloads)
Re: Need engine ID help
LegacyPaddock #1290021 Thu Dec 06 2018 12:43 AM
Joined: Mar 2010
Posts: 9,314
Master Gabster
You have a 1953 235 full pressure engine which would have come in a car with a Powerglide transmission. A very nice engine for your truck. I have one in my 1950 3100 and only the astute observer can tell that it is not a 216. The short pushrod cover is the easiest tell that it isn't a 216.
There should be "captains bars" on the block above the starter.

Last edited by 52Carl; Thu Dec 06 2018 12:44 AM.
Re: Need engine ID help
LegacyPaddock #1290049 Thu Dec 06 2018 04:06 AM
Joined: Mar 2011
Posts: 1,502
Shop Shark
LAQ 2I5I07 = Engine Serial Number or ESN

L = Model Year 1953

A = Passenger Series, Engine built for a Passenger Car

Q= Plant and Type Designation
Q=Assembly Plant
Tonawanda, NY
Q=Type Designation
RPO (Regular Production Option) # 313
235.5 cubic inch engine
Powerglide 2 speed automatic transmission
Engine lubrication system - Full pressure
Hydraulic valve lifters
Automatic Choke Carburetor - 7004478

2I5I07 = Unit number, 2I5I07th engine assembled at plant, starting at 1001, Die stamp (I) letter eye - is same as the number (1) one.

1953 Chevrolet Passenger Car & Truck Restoration Package
Serial Number Locations page 9
Automatic Transmission Option - Supplement RPO # 313 pages 45 - 52 (to view page 46 click next on bottom of page)
1953 Chevrolet car resto pack pdf
1950-Chevrolet Truck resto pack pdf

1950-1954 Engine ID location photo

52Carl is correct it is "A very nice engine for your truck". There are not many around.

Re: Need engine ID help
LegacyPaddock #1290079 Thu Dec 06 2018 03:05 PM
Joined: Dec 2018
Posts: 6
New Guy
Wonderful information from all of you ! Very grateful for the insight and knowledge provided.
Based on your feedback I'm really hoping I can save this guy. He's locked up tighter than Fort Knox and looks really gummed up. Dead "mummy" mouse under the valve cover and other loads of assorted detritus. Pushrod passages are packed full of grit. Going to get the head off and see what else I can see.
Thanks again Bolters !

Moderated by  Woogeroo 

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