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Canadian Poncho Homepage -> Canadian Poncho -> 1970 + Canadian Pontiac General Forum -> Engine number decoding
Post Info TOPIC: Engine number decoding
Jeff 3061


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Engine number decoding
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Hi Guys trying to decode a 1974 built St Catherine 350 with a 751309118 serial number stamped in it.

I believe its a 260hp  mercruiser otherwise K 2 06 cmj . Trying to understand the other number above. 



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bjburnout


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K = McKinnon Industries St Catharines

02 06 possibly Feb 06 (not sure here)

CMJ = if your 1974 is correct, 350  160hp  4barrel, police, Turbo Hydramatic

CMJ was used up to 1991.

Will see what I can find on the big number.












-- Edited by bjburnout on Saturday 6th of August 2022 02:39:45 PM

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bjburnout


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Can you post a pic of the 751 number and explain where it is located?



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......big block, 4 speed, bench seat, it doesn't get much better

 happy motoring :burnout
Jeff 3061


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thanks for the reply , the 751 number is to the left of the other stamping in smaller neater numerals about 3 mm tall

Ive seen references to similar numbers on the net but mainly Canadian stuff. Look forward to you finding something.



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oshawacliff


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 Jeff

to post a photo go to the bottom of the reply section and you will see Attach Images.

You click on that and select the image from your phone or computer

Next you will see that it is uploaded and you can place your cursor a line of two below the last text in your reply

 You get the choice to remove the photo or insert

Using my Impala as a demo of the process

 

1967-Chevrolet-Impala_01_front_view EYE CANDY.jpg

 

 Test completed.

Hope that helps

Cliff



-- Edited by oshawacliff on Saturday 6th of August 2022 09:54:04 PM

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Cliff

Done Hurryin

Like the larger type for my eyes. 

 

 
Jeff 3061


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Thanks , will try and get a clear pic , think has been decked once



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DonSSDD


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I posted this a few days ago in one of your other posts asking about this block.

Can you post a picture of the stamped numbers on the front passenger side head?

Casting numbers of the heads + date codes, pics of those too.

What are the cast numbers on the block, at top of rear of the block, post pics of those too.

My experience is with 60s and earlier blocks in cars and trucks, not marine. It would be helpful to see all the numbers you can find.

Are you asking for this due to curiosity or to try to find an engine to match your Holden?

Don


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63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC.
1963- Pontiac top selling car in Canada

Mahone Bay, NS Still not old enough to need an automatic
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Jeff 3061


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Hi Don ,

trying to get a correct engine for my Holden. I have worked out this one as mid 74 engine heads as well . Ill get some picks for you . Mainly the neat stamped number , likely from a machine. Maybe a precursor to a bar number.



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DonSSDD


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The numbers on the front of the passenger (driver side in your country) were a date code amd what it was built as, ie, same casting number small block could be built as a solid lifter high hp fuel injected engine, or a 2 barrel low hp engine. The heads would be different, intake, and maybe exhaust manifolds or cam. All the casting and date codes can confirm all the parts likely came out of the factory together and were matching, as opposed to put together later from many sources.

We are car guys, not marine guys, mercruiser is fairly unique setups.

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63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC.
1963- Pontiac top selling car in Canada

Mahone Bay, NS Still not old enough to need an automatic
Jeff 3061


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Hi 

got some pics

 



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Jeff 3061


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Hi got that pic



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DonSSDD


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Can you post the pics? Or email them to me and Ill post for you? Click on my user name, you should find my email there.

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63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC.
1963- Pontiac top selling car in Canada

Mahone Bay, NS Still not old enough to need an automatic
Nov 18 to Dec 2 Black Friday UP TO 50% OFF Plus Huge Coupons
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seventy2plus2


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are you having difficulty posting photo's?

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DonSSDD


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B0846CCA-A9C0-43F7-8DF7-8C14237A0533.jpeg

B584F4D9-A3FE-4177-AB78-C986C209855A.jpeg

 



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63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC.
1963- Pontiac top selling car in Canada

Mahone Bay, NS Still not old enough to need an automatic
Jeff 3061


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Thanks for that Don

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seventy2plus2


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ok, now can someone turn them right side up?

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70 2+2 convertible
70 2+2 hardtop
70 Parisienne hardtop

 

 
bjburnout


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cp1 (2).jpegcp2 (2).jpeg



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......big block, 4 speed, bench seat, it doesn't get much better

 happy motoring :burnout
Nov 18 to Dec 2 Black Friday UP TO 50% OFF Plus Huge Coupons
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HK1837


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As others have said, if it definitely is a 1974 cast date engine (McKinnon/St Catharines have this on the side) then its a 1974 full size TH400 L48 or LM1 which are basically the same engine that was put in HQ Holden or Statesman in Australia in 1974. Those final 350 HQ engines even changed colour to Holden engine red and used standard North American Chevrolet Quadrajets (up until August 1973 the carbs had unique Australian numbers).

The block will always be a "tribute" only though as the engine number suffix and the other number are wrong for a Holden or Statesman but it will also be a lot cheaper!

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Jeff 3061


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Thanks for that 

Did you work for gm at the time?

That info about the paint and carb is interesting though 



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HK1837


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No, just know my GMH cars very well! Been researching them for a long time.

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