trying to identify engine

[tmorey]

I have a 56 Roadmaster 73 made in Flint with what appears to be a 322 nailhead engine. The engine serial number is I9649237, the first digit is I as in Idaho. Since this number does not start with V146..... I am assuming this is not the original engine. The casting number on the left head is 1168930, which is for a 56 322 nailhead. What is this engine????

 

[Airy Cat]

That first number is a 1 and not an I. Therefore your engine number is 19649237. The last number, 7, denotes model 70 Roadmaster.

 

[tmorey]

Thanks for the reply. So would you say this is the original 322? The info I have found so far says there should be a "V" as the first digit.