1967 400hp L68 "JC" Engine Stamp Pad - legit or a fake?

[Mark S.]

I am considering a 400hp L68 Convert and would appreciate guidance on the attached engine stamp pad. Please weigh in if this pad is legit or a fake. Many thanks in advance.

1967 Corvette - 400hp - Engine Stamp #1.jpg1967 Corvette - 400hp - Engine Stamp #2.jpg

[Jody B.]

Re: 1967 400hp L68 "JC" Engine Stamp Pad - legit or a fake?

There are several of non-typical marks on the pad and the #2 & #8 are different in each stamp. JMO, but I would proceed very cautiously....

[David B.]

Re: 1967 400hp L68 "JC" Engine Stamp Pad - legit or a fake?

Mark - FWIW, here's a photo of an engine pad which appears (to my eyes at least) to be stamped with the same vin derivative as shown in your photo. Admittedly, not the greatest resolution. It was collected from an internet source back in 2005. The assembly code suffix HO = a 327/300 hp with powerglide.

[Mark S.]

Re: 1967 400hp L68 "JC" Engine Stamp Pad - legit or a fake?

Thank you Jody. Was this a possible scenario on the line?

[Larry M.]

Re: 1967 400hp L68 "JC" Engine Stamp Pad - legit or a fake?

Based on the Birthday Book, Corvette #4248 should have been made about November 11. This is about 5 weeks after the 427 engine you showed was built, which is a bit longer than usual. The approximate November 11 car build date better fits the small block build date that David posted about, although even this is a bit tight. But the Birthday Book can be off a few days. Also November 11, 1966 is a Friday.

What is the 427 engine block casting date??

I don't like the engine build date stamping on the 427 motor, it is too far off the pad and also just doesn't look right to me. The 427 engine blocks were stamped without the heads at Tonawanda. This one looks like it was stamped with the head on.

The 327 engine with the same VIN derivative is a base engine with a Powerglide…………..not one that you would suspect being restamped…..although anything is possible.

Larry

[William C.]

Re: 1967 400hp L68 "JC" Engine Stamp Pad - legit or a fake?

I'd like to see a much more crisp picture before making any judgement, with much less reflection off the machined surface...

[Dick W.]

Re: 1967 400hp L68 "JC" Engine Stamp Pad - legit or a fake?

Larry I know where there are two 250 hp restamps. Never rule out anything.

[Mark D.]

Re: 1967 400hp L68 "JC" Engine Stamp Pad - legit or a fake?

I am considering a 400hp L68 Convert and would appreciate guidance on the attached engine stamp pad. Please weigh in if this pad is legit or a fake. Many thanks in advance.

After what Dave Borror posted, my advice would be...take off running, don't look over your shoulder, run until your about to pass out then, keep running.

Kramden

[Mark S.]

Re: 1967 400hp L68 "JC" Engine Stamp Pad - legit or a fake?

I agree Larry, the Assembly stamping hugging the bottom edge of the pad makes me skeptical. I commonly see this stamping in the middle to upper portion of the pad? I guess after a quick couple of boilermakers over lunch, anything was possible in those afternoon hours....

[Dick W.]

Re: 1967 400hp L68 "JC" Engine Stamp Pad - legit or a fake?

After what Dave Borror posted, my advice would be...take off running, don't look over your shoulder, run until your about to pass out then, keep running.

Kramden

Agree with the "bus driver" Run Forrest, Run

[Page C.]

Re: 1967 400hp L68 "JC" Engine Stamp Pad - legit or a fake?

Google search of the vin for this car shows a red/red 427/400 air cond. side exhaust, head rest, bolt on wheels, etc. Then the photo of a 327/300 powerglide engine shows up with what looks like the same vin derivative. This car is the first I have seen with both a small and big block engine option at the same time. It also seems to float around in varies auctions. Would love to see a trim tag photo.

[Steve B.]

Re: 1967 400hp L68 "JC" Engine Stamp Pad - legit or a fake?

After what Dave Borror posted, my advice would be...take off running, don't look over your shoulder, run until your about to pass out then, keep running.

Kramden

I agree 100% with Mark. This is why certain rare and desirable models trade at such high multiples compared to many of the other comps that are available through ebay etc.

[Ara G.]

Re: 1967 400hp L68 "JC" Engine Stamp Pad - legit or a fake?

Post #4 from Dave puts this one to rest....Forever....

[Tim G.]

Re: 1967 400hp L68 "JC" Engine Stamp Pad - legit or a fake?

I remember years ago looking at a 1967 400 horse black coupe in Northern California. Noland Adams was along with me and he noted that when he looked at the same car in 1975 it was a 390 horse black coupe. He had kept note of nearly every Corvette he looked at over the years.

[Erik P.]

Re: 1967 400hp L68 "JC" Engine Stamp Pad - legit or a fake?

Mark - FWIW, here's a photo of an engine pad which appears (to my eyes at least) to be stamped with the same vin derivative as shown in your photo. Admittedly, not the greatest resolution. It was collected from an internet source back in 2005. The assembly code suffix HO = a 327/300 hp with powerglide.

Reviving an old thread. Sorry about that!

Isn't it possible for two engine pads to have the same serial number if one of them comes from a coupe and the oither from a convertible?