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Old 13-03-20, 20:31
Richard Nixon Richard Nixon is offline
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Default Help to identify my engine!

I'm confused! My C8 is registered as a 1941 Chevrolet

The engine number thats stamped on the side of the engine is PR3870771
The engine casting number is GM 839253
The head casting number is 838773

From what I have researched in this forum, David Hayward (RIP) and Cletrac (RIP) identified this as a 1940 216 engine fom the head casting.

http://1954advance-design.com/Stoveb...g-numbers.html

This website shows it as a 1940 head but the block casing doesnt quite match.

Chevs of the 40s, who I was conversing with about buying the engine parts I need, have said it is a canadian 230 engine!

Can anyone identify my engine from the numbers and give me a definitive ID on it?

Many thanks
A very confused Richard!!
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  #2  
Old 13-03-20, 21:10
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chris vickery chris vickery is offline
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From my sources the head comes back as a GM 216cid. Was not able to find any references to the block 839253.
Chris
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  #3  
Old 13-03-20, 21:28
Richard Nixon Richard Nixon is offline
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Thanks Chris,

For reference the bore is 3 1/2" and the stroke is 3 3/4"

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Old 13-03-20, 21:46
Grant Bowker Grant Bowker is online now
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In an effort to help, I went looking for David Hayward's large list of #s. The one I'm thinking of has a red/pink background and has been republished several times in deifferent places (many of them crediting David)... and right now I can't find any of them. Can anyone help me find a link to it?
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Old 14-03-20, 00:23
david moore david moore is offline
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Default Ford CMP -InfoEx List of CMP engine numbers

For what it is worth, I've looked at my copy of the Ford CMP list. Your engine number is not included but the nearest ones that bracket it are dated ;
PR 3868623 - C60L 12 Dec 1942
PR 3881308 - C60L 22 Jan 1943

The C8's listed are all in the range (ZR) 2802530 to 3766043
Are you sure that your engine isn't ZR as opposed to PR?
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Old 14-03-20, 02:25
Richard Nixon Richard Nixon is offline
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Hi David,

Yes its definitely PR.

A friend of mine thats an ex REME chap, said that if they put rebuilt landrover engines back in a landy they prefixed it PR. Would that practice have been in use in the 40s?

The engine overhaul plate shows it had std bores, bearings and big end bearings in October 1945.

Last edited by Richard Nixon; 14-03-20 at 02:44. Reason: spelling correction
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Old 14-03-20, 02:30
Paul Singleton Paul Singleton is offline
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Default Mystery engine

Are you sure that the bore is 3 1/2? If it’s 3 9/16 you could have a 224 engine from a Canadian GMC truck. I haven’t seen one but it is listed in my 1939/40 Canadian shop manual. It was a Canadian manufactured engine for the GMC and basically seems to be similar to the 216 but with a larger bore and aluminum pistons. It was probably made obsolete by the 235 engine introduced in 1941. If it is a Canadian built engine that may be reason for the odd casting numbers.

Paul
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