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the serial number on the engine has been removed due to the previous owner having the block decked.
Is there another method to determine if the engine is the original?
Not really. You can check the block casting number and date code to see if it could possibly have been the original engine, but without the info on the stamp pad, you won't know for sure.
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
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Our forensic people used a solution called Fry's Reagent to restore obliterated serial numbers off firearms. Not always successful but worth a shot. Depends on how deep the area was decked. Google Fry's Reagent. Your only other option, as was stated, is the date codes on the block. Still not an absolute certainty but you can narrow it down to a probabililty.
From: Middle TN by way of KY, OH, VA, IL, CA, FL, NY, SC, HI
If the engine being correct is very significant to that particular car's value, it may be worth it to consider having a micrograph examination in an attempt to pull up the original stamping.
A micrograph is what the FBI does to attempt to bring back ground off gun serial numbers. It is an expensive process and I have no idea what the availability is for having an engine block micrographed, but I'm guessing that having it done might be in the super high dollar classic territory.
A cheap attempt could involve the acid etching used on old worn down coins, but I'm no expert in that process either.
I agree with the above - see if the engine component casting dates match. If someone is trying to pass off a non matching engine, they're not likely to have gone beyond the block casting date itself. So pulling the valve covers makes sense - if those dates do not match the car then the story gets "spongy."
If it's a low HP car, a cast iron manifold date can be read easily. If it's a high HP car, the aluminum manifold date is under the oil splash pan - hard to inspect, but a very good verification check.
Even if you could raise the engine pad stamp the fact that the broach marking would be swirled due to the decking would leave considerable doubt to any potential buyer as to the authenticity of the motor. If you re a buyer looking for a pedigree I would pass . If you re the seller I would leave it alone.
We tried using the Fry's Reagent and had no success. You can read about it here> http://www.beldenspeed.com/the-shop-...umbersmatching Not a Corvette, but a Big Block Chevy nonetheless. Since it was a 1970 it had the CON VIN stamped by the oil filter.
When mine was getting rebuilt, it still had the original "HH" chalk markings (327\365hp) from the factory. My numbers match, but this is nice to have as more proof.
When mine was getting rebuilt, it still had the original "HH" chalk markings (327\365hp) from the factory. My numbers match, but this is nice to have as more proof.
When mine was getting rebuilt, it still had the original "HH" chalk markings (327\365hp) from the factory. My numbers match, but this is nice to have as more proof.
