CRG Discussion Forum

Camaro Research Group Discussion => Decoding/Numbers => Topic started by: Brew14u on October 01, 2021, 08:29:45 PM

Title: Engine Code POP and Block Pad
Post by: Brew14u on October 01, 2021, 08:29:45 PM
For a born with engine, shouldn't the engine assembly code on the Protect-o-Plate match the engine pad stamp?  My car was resold early and I only have the warranty POP, which does not provide much information; however, I have some early receipts that have the POP imprint.  The POP imprint shows the engine code to be T0605DZ, but the engine pad shows V0605DZ.  I think it's the born with engine further supported when I found the date to match and the DZ code.  I didn't question the T at the time, but recently was reading that DZ engines were not assembled at Tonawanda.  I have also read about typos on POPs. so that is my current assumption because I am guessing that the POPs were manually created and subject to mistakes.  Any other known examples of this kind of discrepancy in the POP engine code or other explanations for what may have caused the discrepancy?
Title: Re: Engine Code POP and Block Pad
Post by: x66 714 on October 01, 2021, 09:01:34 PM
You'll need to post some quality pictures for the experts to determine....Joe
Title: Re: Engine Code POP and Block Pad
Post by: Brew14u on October 02, 2021, 12:38:41 AM
Here are some pictures, but the quality may not be good.
Title: Re: Engine Code POP and Block Pad
Post by: Brew14u on October 02, 2021, 12:42:43 AM
That didn't work.  Here's another try.
Title: Re: Engine Code POP and Block Pad
Post by: Brew14u on October 07, 2021, 02:03:49 AM
Here is another attempt at reducing the KB of the pictures to stay below the limit.
Title: Re: Engine Code POP and Block Pad
Post by: cook_dw on October 07, 2021, 12:13:22 PM
I wouldn't trust the warranty book 100% and you will also need to share higher res photos of the pad to get a better opinion on the legitimacy of the stamp in question.  This might require you to remove the alternator to do so.  But to sorta answer your main question; yes there are known mistakes on POP's. 
Title: Re: Engine Code POP and Block Pad
Post by: firstgenaddict on October 07, 2021, 01:11:20 PM
That is not the first 69 Z28 POP I have seen which was mis-stamped with a "tonawanda" DZ.
Title: Re: Engine Code POP and Block Pad
Post by: Brew14u on October 07, 2021, 04:28:33 PM
Exactly what I wanted to know.  I appreciate the responses.  Given what I know about the history of this car and the documentation that I have, I am fairly certain that it has the born with drivetrain.  I may pull the alternator and clean the pad to get better pictures.  Thanks.
Title: Re: Engine Code POP and Block Pad
Post by: firstgenaddict on October 07, 2021, 04:37:25 PM
Do not use anything abrasive on the pad.
Just use some lacquer thinner on a rag, then lightly oil it with rem oil or boeshield.
Title: Re: Engine Code POP and Block Pad
Post by: Brew14u on October 11, 2021, 04:52:02 PM
Here are a few more picture of the pad after cleaning with lacquer thinner.
Title: Re: Engine Code POP and Block Pad
Post by: bcmiller on October 11, 2021, 07:43:38 PM
POP just seems to be an error, not a big deal.

I will try to see if I have any examples of that DZ date stamp later.
Title: Re: Engine Code POP and Block Pad
Post by: bcmiller on October 12, 2021, 03:48:31 PM
Engine stamping seems to be fine.

Maybe others will chime in.
Title: Re: Engine Code POP and Block Pad
Post by: Brew14u on October 19, 2021, 05:37:44 PM
I appreciate the responses and information.
Title: Re: Engine Code POP and Block Pad
Post by: sixt9x33rs on October 02, 2022, 03:01:02 AM
My POP also has a T instead of a V for my 69 Z28.
Title: Re: Engine Code POP and Block Pad
Post by: x66 714 on October 02, 2022, 03:31:57 AM
I'm pretty sure only Flint built 302s.....Joe
Title: Re: Engine Code POP and Block Pad
Post by: 396 SS/RS on October 02, 2022, 04:28:05 AM
My 396 engine pad stamp matches my POP and the POP has a C2 (Ermine White) but my car is G2 (Ash Gold) so there are mistakes.