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The stamping itself looks what I would call "factory typical", but the surface of the pad is not. The lengthwise lines in the pad may be the result of decking the block, or using something abrasive to clean the pad, but there's no sign of original broach marks that I can see. Broach marks marks are lines left on the pad by the factory machining process of the block, and run front to back on the pad, not left to right. Without the broach marks it's hard to determine if it is the original engine.
Car was for sale in 2008 at ProTeem in Ohio. There is a 1992 ad in NCRS driveline where the owner was looking for the original block. Maybe it was found, but the picture of the engine pad doesn't look very good with broach marks.
I would say NO to the engine stamp pad..........for a couple of reasons. But agree that additional high resolution photos are needed to be conclusive at this time.
Car was for sale in 2008 at ProTeem in Ohio. There is a 1992 ad in NCRS driveline where the owner was looking for the original block. Maybe it was found, but the picture of the engine pad doesn't look very good with broach marks.
Some great background research in the above post! Sounds like this is one to walk away from !
Wasn't the date stamp on the BB engines much closer to the head and not in alignment with the partial VIN??
Originally Posted by KingRat
Typically.
Nice and concise KingRat. 👍
The characters were stamped prior to head installation because that huge plug on the side of the head would have gotten in the way. Where it ended up and its angle was pretty variable because I don't think the holder registered against anything. Mine is about the same location:
Last edited by barkingrats; Jul 10, 2025 at 03:51 PM.
Wasn't the date stamp on the BB engines much closer to the head and not in alignment with the partial VIN??
Personally I don't have a problem with the position of the Tonawanda stamp. There was no specification I'm aware of for it's placement, other than being on the left side when facing the pad. I think generally the engine stamp was roughly stamped in the middle of the pad and not close too the head. If the heads were installed when the pad was stamped the casting plug in the front of the head would prevent getting the gang holder used, close to the head.
In the Hagerty link that midyear posted the picture of the pad appears much sharper, but there's still no discernible broach marks that I can see.
Thanks guys , for the price there asking I'm going to pass on it.
Given the condition of the stamp pad, it seems clear to me that it is a NOM 435 (as many are). What was the asking price? Given the cost of the parts (and the NCRS awards), it could still be a legitimately $100K+ car. But not a $200K+ car as that is for original engined cars with documentation.
I looked at this car around 2006 when Proteam first got it. Paperwork and tags are legit however the motor is a restamp. Real car that lost it's original engine, like most of the cars of that era.
I looked at this car around 2006 when Proteam first got it. Paperwork and tags are legit however the motor is a restamp. Real car that lost it's original engine, like most of the cars of that era.
I would like bet money that half of all vettes had their engines replaced within 5 to 8 years of new