engine code problem?

[roland verrico]

Re: engine code problem?

Ray, first I think the date code you want is C94. I got this near the distributor on the manifold.If this is not right I'll need to know where to look.Second you mentioned a 65 JG, what does that mean.Thanks Roland.

[Ray C.]

Re: Intake manifold casting number

Hi! Gene

Could you please provide the engine assembly date? I am curious if early 65 250 HP engines could have had the 3844457 intake.

Thanks, Ray

[Ray C.]

Re: engine code problem?

Hi! Roland

In reference to JG, I am referring to the NCRS "1965 Corvette Technical Information Manual & Judging Guide". The C 9 4 casting date stamp refers to a March 9, 1964 intake and I believe this would be too early for your engine.

Thanks for the information,

Ray

[roland verrico]

Re: engine code problem?

I thought I had seen it somewhere , according to vette vues fact book it gives the number 3844457 for the intake manifold of a 250H.P. 1965 .Is that incorrect.Thanks Roland.

[Michael W.]

Re: Being that:

More info:

http://forums.corvetteforum.com/zerothread?id=666824

http://www.corvetteactioncenter.com/forums/showthread.php?s=&threadid=37397

[Eugene B.]

Re: Intake manifold casting number

Ray,
The engine assembly date on my '65 250HP is F0222HO.

Hope this helps,
Gene

[Eugene B.]

Re: Verdict is getting close

Roland,
An important key to your engine question was there in your first posting. You stated that the 120992 was stamped "smaller" than the engine date code.

As several have pointed out, there should be a 5 in front of that number, but more importantly, all the numbers and letters on the engine pad are the same height and type style. At least that's the way they are on my original '65.

With the other number discrepancies, manifolds, etc. and the engine number question, I doubt that the motor that is in your car is the original motor.

Best regards,
Gene

[Loren L.]

NOT TRUE! Assembly stamps are 1/4"

and VIN stamps are 3/16".

[Mike Cobine]

Maybe it isn't so strange - found another

I thought I'd check on others to see if there was a pattern. Strangely, in Noland Adam's Vol II book, car 120268 has an engine F0708HT. Odd we have two cars built about the same time with engines built roughly 2 weeks later and both had the VIN stamped in them.

[Chuck S.]

This VIN Stamp also missing the preceding "5"? *NM*

[Ray C.]

Re: engine code problem?

Hi! Roland

The research I have done on the 65 base 250HP intake leads me to believe that the 3844457 intake was used on 1964's and "maybe" early 65's (cars produced in 1964). The 65 JG (NCRS Judging Guide and Informational Manual) list the 3844457 as the preferred intake and the 3866922 as an acceptable alternate manifold. Nolan Adams "The Complete CORVETTE Restoration & Technical Guide - Vol. 2, 1963 Through 1967 page-262 list the cast iron 250HP intake as: 3866922. I try to look at all 1965 base 250HP intakes on or off cars and I have not found a 3844457 intake with a 5 (year casting number).

Any information that the forum can provide on the 3844457 or 3866922 intakes would be appreciated.

Ray Carney

[roland verrico]

Re: engine code problem?

Thanks Ray, I guess thats why I was confused when I saw that the 3844457 was the correct intake for the 65 - 250H.P. in the vette vues fact book.

[John H.]

Re: Extremely doubtful that the car would

Cars didn't sit for weeks waiting for an engine change, and St. Louis didn't tear engines down (Flint Engine didn't allow it for warranty reasons, and wouldn't pay for it). If an engine had an internal problem, it was pulled and returned to Flint Engine on a CMR (Credit Memo Return) invoice, which authorized billing Flint Engine for 1) Credit for the engine and 2) Labor charges for the engine change. Another engine was pulled from stock at the engine dress line (there were racks of them stacked to the ceiling there), stamped with the car's VIN derivative, and installed. This whole process seldom took more than one day. I would be very suspicious of a June 28th-built car with a July 12th engine, an incorrect VIN derivative stamp, and what appears to be a passenger car "HC" code instead of an "HQ" code.

[Loren L.]

Perhaps it should also be noted that 10-15

years ago (or is it longer?) there was a LOT OF DISCUSSION about whther "I" was used in the casting date on blocks.......without an "I" this suddenly becomes a June block.......

[Clem Z.]

Re: engine code problem?

the NHRA tech inspection manual for the 65 250 HP list only the 457 intake and these specs are supplied to NHRA by GM. this list is dated april 1965 all my listing for a 922 do not include a Y car(corvette) but list marine applications etc.