1972 LT1 Engine Stamp

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May 23, 2022 | 01:42 PM

Bowtie_Brigade

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1972 LT1 Engine Stamp

Hello Corvette Community,

Could you weigh in on this engine stamp and your thoughts on authenticity? Most appreciated!

May 23, 2022 | 02:07 PM

dan1495

Burning Brakes

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From: Clear Lake Shores Texas

2016 C3 of Year Finalist

That car is on the C3 registry and the engine stamp picture there looks authentic to me - for what that might be worth as a 72 LT-1 owner. It looks like someone has tried to clean it up between then (2015) and now. Others that know a lot more than me might have different opinions.

May 23, 2022 | 02:38 PM

Bowtie_Brigade

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The "Y" gave me pause. I'll see what the others have to say. Appreciate the quick response

May 23, 2022 | 03:22 PM

firstgenaddict

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There are a number of LT1 stamps with the final letter hand stamped. One of my 71's is the last 71 LT1 known to have been built 18 cars from the end 21783 and it has the last letter (Z) skewed.

The reason for this would be the engine assembly -minus the plug wire stands, waterpump, and exhaust manifolds could be used in a '72 LT1 vette or '72 Z28 manual - swapping the bellhousing and flywheel for a flex plate gets you to a Z28 auto and then replacing the oil pan with the 6 qt unit 11" flywheel with a 10.5" flywheel and requisite bellhousing gets it to ZR1 configuration

FWIW my car's engine has never been questioned in judging at the chapter regional or national level where it has multiple Top Flights over 95% and has never had a point taken against it.

It looks good to me

May 23, 2022 | 03:57 PM

dan1495

Burning Brakes

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From: Clear Lake Shores Texas

2016 C3 of Year Finalist

I agree with James above - my 72 LT-1 and many others I have seen have the crooked “Y”. It worried me the first time I saw one.

May 23, 2022 | 07:20 PM

Rowdy Rat

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Quote:

Originally Posted by firstgenaddict

There are a number of LT1 stamps with the final letter hand stamped.

Or the last two… Or all three depending upon the circumstances.

Quote:

It looks good to me

I’ve always said you can rule an engine out with a photo, but near impossible to say with certainty that it’s real from a photo. However, I’m with you... Looks pretty darn good from what I can see, certainly worth a look in person to confirm what you think you see in the photo.

Regards,

Stan Falenski

May 23, 2022 | 11:20 PM

vettebuyer6369

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Moving from Classified Ads to General Discussion.

May 24, 2022 | 02:03 PM

derekderek

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From: SW Florida.

i blew the image up and you can clearly see pitting in the bottom of the letters and numbers that matches the pitting on the deck itself. i think that is a very difficult detail to fake.