eng stamp decoder expert? - Chevelle Tech
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post #1 of 8 (permalink) Old May 4th, 20, 11:32 PM Thread Starter
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eng stamp decoder expert?

On the front passenger side just below the head, I see CE058742 and N426.

I think the CE is one of those warranty replacement engines, the 0 is 1970, and the 58742 is the serial number of the engine. I believe it was made at Tonawanda by the serial number. So, what is the N426?

W/o pulling the motor and digging through it, how can I find out if this is a 427 or 454?

Thanks in advance.
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post #2 of 8 (permalink) Old May 5th, 20, 12:19 AM
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Re: eng stamp decoder expert?

N426- Could it be a " NEW426 ", I has that MOPAR shade of Orange, Not Sure!.........
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post #3 of 8 (permalink) Old May 5th, 20, 12:49 AM Thread Starter
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Re: eng stamp decoder expert?

Lol. It's actually "write me a ticket red".

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post #4 of 8 (permalink) Old May 5th, 20, 1:19 AM Thread Starter
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Re: eng stamp decoder expert?

Found the casting number on the back....3969854, so guess its a 402 from 1970, and not a 427 or 454 after all.

So, what about the N426? Nova 426 hp? Lol.

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post #5 of 8 (permalink) Old May 5th, 20, 8:14 AM
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Re: eng stamp decoder expert?

Possibly a rebuilder I.D.
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post #6 of 8 (permalink) Old May 6th, 20, 8:17 PM Thread Starter
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Re: eng stamp decoder expert?

I've never heard of that. Would that be the guy at Tonawanda that built it, or someone at a machine shop between 1970 and now?

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post #7 of 8 (permalink) Old May 6th, 20, 8:36 PM
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Re: eng stamp decoder expert?

Quote:
Originally Posted by Not2Fast View Post
I've never heard of that. Would that be the guy at Tonawanda that built it, or someone at a machine shop between 1970 and now?

There was no "one guy" who would build these engines. They went down a line and stopped at stations where one-or a few operations were done. They weren't like how a high end Mercedes or Bentley engine, or a GM LSA LS9 or LT5 engine is built.


All big blocks were built at Tonawanda.


The odd stamped numbers are probably coding that tells a parts counter guy what it is and build day and shift ID so GM could keep track of it.
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post #8 of 8 (permalink) Old May 7th, 20, 8:18 AM
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Re: eng stamp decoder expert?

Quote:
Originally Posted by Not2Fast View Post
I've never heard of that. Would that be the guy at Tonawanda that built it, or someone at a machine shop between 1970 and now?
That would be my "rebuilder" reference fwiw.

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