CE Engine Stamp Prefix

[Frank H.]

mainly out of curiosity because this car has a lot of other non oe issues,
but is there a deduction for a ce prefix on the engine stamp pad if the date
codes are correct for an engine that reasonably could have been replaced under
warranty but with no documentation? iirc, the warranty was for 5 years or 50k miles.
this car is a base SB '67. of course it's possible it was a replacement for another
car and somehow ended up in this one.

[Don H.]

Re: CE Engine Stamp Prefix

Hi Frank
the answer is yes. 25 points for the date stamp, and 25 points for the vin derivative stamp. The pad would keep its 38 points for broach surface if that appears like OEM.
You can see all of this in the sample Mechanical score sheet for any mid year car by tapping the link Services in large tool bar above, then Judging Awards in the drop down, then Judging Score Sheets.

https://www.ncrs.org/njc/63-67%20Score%20Sheets/63-67%20Mchncl.pdf

[Dan A.]

Re: CE Engine Stamp Prefix

Or you can scroll to the bottom of this page and click on the button Judging Score Sheets listed in the far right column in about the middle.

As an aside there is a difference in the judging of the pad surface between C1 & C2.

[Terry M.]

Re: CE Engine Stamp Prefix

Or you can scroll to the bottom of this page and click on the button Judging Score Sheets listed in the far right column in about the middle.

Thanks Dan. I didn't know the score sheet link was on the bottom of this page. How could it be simpler?

[Don H.]

Re: CE Engine Stamp Prefix

thanks Dan,
I knew it was there, but forgot. That is the best way to go.
See you this week, and Happy Mom's Day to your better half, the car guy.

[Patrick B.]

Re: CE Engine Stamp Prefix

According to the judging sheet, sInce the casting date of a warrantee block would be later than the car build date, it would loose all the pad points including grain. It would also loose 175 points because the casting date is too late and a further 350 points if the casting number of the later warrantee block was different from the original. There is no provision for a warrantee block.

[Don H.]

Re: CE Engine Stamp Prefix

except that OP states that the dates work, and presumably the casting no. as well, for his car.
He speculates that the CE block may originally have gone into a different Corvette before finding its way into his car....

[Frank H.]

Re: CE Engine Stamp Prefix

sorry for the confusion, i'm new to corvettes and ncrs judging.
these last few months my learning curve has been straight up.
by dates i meant that the block would fall within the warranty period
and could actually have been replaced by gm under warranty
within the 50/5 warranty period for a '67. specifically, before
the ce prefix blocks (72-73?) just became over the counter or "crate motors".
when i mentioned it might have come from a different car i was just
trying to anticipate another possibility for provenance.
i now see that this is all moot, it's not the born with motor and
that's that.

[Don H.]

Re: CE Engine Stamp Prefix

Frank,
Not having original engine does not render Section 2 of the Mech score sheet moot. Flight Judging does not evaluate if parts are original to a car. Only if they have the typical appearance of what would have been original to the car. This includes the engine. A CE block with all conforming numbers and dates (except the date and vin derivative stamps) that precede the build date of the car (within 6 months) would score all the points except for 50 for the two stamps on the pad.

Does it make sense?

[Dan A.]

Re: CE Engine Stamp Prefix

Don, Patrick forgot to point out a CE block can not have a casting date or likely number to be suitable for a '67.

I will also caution that one needs to read and adhere to the the instructions printed in italic in brackets under each line item in section 2, page 1 of the Mechanical sheets. For those not familiar excessive deduction could occur. I.E. it is not 350 plus another 175 and so on. It stops at 350 with C2s. The exception is the pad surface which is treated differently for C1s than C2s. Go figure. Has no one noticed this or have I got the wrong end of the stick?

I see the OP has changed the scenario from a CE block to a service block current during the '67 model year. Too much guess work involved in this description. OP needs to post cold hard facts. All the numbers that this case has. Photos are always best.

[Frank H.]

Re: CE Engine Stamp Prefix

don, it's starting to. i'm still partially out of luck. this particular block decodes as a 1969.
well past 6 mos.
thanks to all who tried to clarify this for me. this forum has been a great resource.

[Frank H.]

Re: CE Engine Stamp Prefix

hi dan, the stamp pad reads CE9B21982. i think this decodes as :
CE-Chevrolet Engine ( also,i thought i read somewhere that ce prefix would indicate a replacement
under warranty if done before about '72 or '73? and that after that the warranty program was
cancelled and the the remaining ce blocks were sold over the counter. there seems to be a lot of
conflicting info out there.)
9- 1969
B- Flint V8, 3rd run of 5000
21982- unit sequence # or 121,982nd of 1969
as i said, i'm new to this and i'll be glad to provide any and all facts that i can.
also, in this case, what's the difference between a CE block and a service block?
any info is much appreciated.
thanks again.

[Mark E.]

Re: CE Engine Stamp Prefix

Factory warranty back then was 12 months/12k miles.

[Frank H.]

Re: CE Engine Stamp Prefix

again, i should have been more specific. the 50/5 would have been the power train warranty.

[Page C.]

Re: CE Engine Stamp Prefix

This 1967 small block would have to have a 3892657 casting number. If not, it a 350 point deduction and nothing else is judged in the "B", "C". or "D" columns of the Mechanical sheet.