What the heck does he have

Got a member over on ChevyTalk that is having problems ID'ing the SBC heads in his 56 Chevy 210.
Numbers make no sense & I have ran them & come up w/NOTHING.

Here's his post plus some pics of the heads....

Quote:

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I have a 56 Chevy, 210, the engine has 4bbl heads, but I can't find the head casting numbers listed in any reference material. I've been told they may be 59-60 truck heads, and possibly Canadian in origin. There is a vertical block on top of the rectangle, on the end of the heads, but the sides of the rectangle are sloped rather than vertical. The casting number on the heads is: 3773013. If anyone in this forum can shed some light on this particular casting number, and maybe with some reference, it would be appreciated.

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Sooooooooo folks what the hell does he have or is it possibly he has a set of head w/BS casting numbers.
He says that the 3's are 3's & not 8's

http://i23.photobucket.com/albums/b3...psda118095.jpg

http://i23.photobucket.com/albums/b3...ps0fe0bb35.jpg

that top ear looks like a pad to drill so i seen 283 truck head like that but looks like the last number could be off 3773012 then it.s just a 265 head and valve size would be 1.72/1.50 get the heads off then that would help more for chamber size valve size and there should be casting year pad that would help my old head book is at the shop so it just maybe there they should of put a 2 were the 3 is ?

Thanks Pat, I will relay the info to him........joe