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I think you will find the casting number is 1 20 2, Jan 20 62
Build is F0129S
F Flint
01 Jan
29 29th
S - I cannot find my build codes this morning, not Corvette
the owner will not be very happy. He bought it because the previous owner told him it was a '64 Corvette engine, regardless of the fact it has a two barrel Rochester carb and cast iron intake!
I'm just a bit confused.
1 20 2 for a casting number doesn't ring true--they used a letter designation for the month, not a numeral, so the 1 is a problem for me. If it is January 20th of 1962, it would be A 20 2.
If it is I 20 2, that is September 20, 1962. The problem with that is that the assembly date of the motor (January 29th) doesn't fit with the September casting.
Something doesn't ring true here. What is definitely not the case is that it is a 64 Corvette engine. It's either 62 or 63 base-motor passenger car.
The manifold is not original to the engine. The 250 hp passenger car engine used a 4 barrel carburetor as did the 250 hp Corvette engine. Some passenger 250 hp used a Rochester carb whereas the Corvette used a Carter WCFB. The original manifold was the same, though.
Assuming that the rest of the engine is composed of all the same components that it was originally supplied with, there is virtually no difference between a Corvette 250 hp 327 cid engine and a passenger car 250 hp 327 cid engine. So, for all practical purposes and in this case, the distinction between a passenger car engine and a Corvette engine is pretty much moot.
So I'm thinking this. Is it possible the casting "1 20 2" is actually a "L 20 2", (bottom leg of the "L" missing), therefore making it a Thursday Dec 20, 1962 block, with a assembly date of Tuesday Jan 29 1963? I know that puts it about 5 weeks apart, but with Christmas and New Years holidays that shortens it up a bit.
The S suffix missing the last character? Maybe not a good stamp? Maybe it's actually a SC(250hp PG WCFB) or SD(300hp PG AFB). If not, yes a passenger car motor. If so the owner will not be pleased.
A very clear photo of the casting# and pad would clarify things.
Also, did the Corvette 2870 have the Passenger car motor mount position holes threaded? The ones on the side of the block? I thought I read somewhere(Noland A?) that if it was going into the Corvette they didn't thread the holes for the unused motor mounts. Maybe I'm thinking of the earlier motors?
The "year" portion of the casting date code format, "F" vs. "T" prefix on the pad stamp, machined-vs.-"as-cast" symbols on the ends of the heads, and presence/absence of the oil gallery plug above the timing cover.
In the machining department, they had no clue what the engine's final application was; all blocks cast after 1957 had the side motormount bosses drilled and tapped, AND the four lower front motormount bosses were drilled and tapped on all blocks from 1955-on.
Thanks John. I think that I have a 1962 passenger car engine: 327 with four-barrel, 250hp, and Powerglide (TI0I8S). I have posted this info before. But I want be sure before selling it to a new owner. I am not into stamp-pad surprises for him/she or me. Whatever 327 it is, it is docile but very, very dependable. Just like an Energizer *****. Never gives a problem.
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