I am having trouble finding a 3904391 cyl head dated Nov/66 ("K") to match my other original head. Lots of Oct/66 heads out there, however. Heard somewhere that considerably more heads were cast in Oct than in Nov, although not sure why that would be, unless perhaps they were piling up because of the strike and the foundry cut back in Nov. I was working on these puppies when they were new but we had no reason to pay attention to dates back then. Does anybody know anything about this puzzle? Thanks.
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Re: 3904391 cyl heads dated nov/66?
Yeah, Joe, you're right, but my one original head is K216, and by my observations over the years with a date this late in the month it would be unlikely the other would have been an Oct head. And with my pad date of Dec 2 it eliminates a Dec head. I will concede I am being a mite picky but am set on finding a good Nov piece. If anybody out there has one or knows where one is please let me know. Thanks for your reply.Comment
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Re: 3904391 cyl heads dated nov/66?
Lance,
My early December 1966 build L79 has one head dated K156 and the other F156.Comment
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Re: 3904391 cyl heads dated nov/66?
Wow. Maybe the strike did throw everything a little out of whack. The Tonawanda plant is only about 1 1/2 hrs from me and we used to race with guys who worked there and they would tells us tales of what went on in that facility that most (now) would rather not know. I do remember them saying the blocks and cranks and heads, etc came off the skids in order they were placed and engines were assembled in rough order but that there were a lot of inconsistencies and almost anything was possible at any given time. What is your VIN, Kurt? Mine is 106205, pad stamped Dec 2, build date Dec 19, Job 101.Comment
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Re: 3904391 cyl heads dated nov/66?
Lance, there are a couple of vendors in Hemmings under Corvette Parts in WI who sell blocks & heads who may be able to help in your search. Good Luck, SteveComment
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Re: 3904391 cyl heads dated nov/66?
Tried both. Thanks, Steve.Comment
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Re: 3904391 cyl heads dated nov/66?
Hi Kurt, it is always interesting and useful to compare numbers and dates on cars with close build dates. The block on my blk/red coupe 106205 is J146 - Oct 14/66. My other L71, blk/blk coupe 106014, build date Dec 13/66, block casting H296 - Aug 29/66, pad stamp Oct 5/66. Then there is my friends blk/blk leather L68 coupe w/AC & AIR, build date Dec 15/66, pad stamp Nov 11/66.LanceComment
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Re: 3904391 cyl heads dated nov/66?
My L-71, sn# 14317 has original engine assembly stamp T0309JE, block cast A-25-7. One head is A-21-7 and the other head is K-21-6. Ironically, another L-71 owner saw my A-21-7 head on the bench and wanted to buy it. He thought one of his heads was too early and he needed to replace it. I asked him the date on his "bad" head and it turned out to be K-21-7. When he realised we both had engines with similar build dates with exactly the same dated heads with the pair cast 2 months apart, he was happy that he had likely original heads after all. Lance, you don't need both heads to be November cast.Comment
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Re: 3904391 cyl heads dated nov/66?
Patrick, yes, I know, but I am just being a bit picky and want both heads to be Nov. Oddly, I have extra 391 heads dated A217 (pair) and a single A247.Comment
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