3755550 or3774692 heads for july 59 car

[Bob W.]

I have a 1959 car that I have owned since 1970. I put a set of 327 heads on it in the 70s. with spring Carlisle coming up I would like to look for the right set of heads. The original block was cast in mid June 1959. Not sure what the difference, other than the date cast, between a Tonawanda cast and Saginaw / flint cast head ? Thanks in advance for any help you may provide.

[Joe L.]

Re: 3755550 or3774692 heads for july 59 car

I have a 1959 car that I have owned since 1970. I put a set of 327 heads on it in the 70s. with spring Carlisle coming up I would like to look for the right set of heads. The original block was cast in mid June 1959. Not sure what the difference, other than the date cast, between a Tonawanda cast and Saginaw / flint cast head ? Thanks in advance for any help you may provide.

Bob------


I think you mean 3755550 or 3767465. The 3774692 was a 1960 cylinder head. I have no information that it was used for late 1959 although I could not rule it out.

My recollection is that there was a difference in the external machined finish of the heads between Flint manufactured and Tonawanda manufactured. I think on one or the other the "pyramid-shaped" casting symbol and underlying rectangular block on the ends were machined flat whereas the other was as-cast.

[Bob W.]

Re: 3755550 or3774692 heads for july 59 car

joe you are right I did mean 3767465 thanks

[Bill M.]

Re: 3755550 or3774692 heads for july 59 car

Bob------


I think you mean 3755550 or 3767465. The 3774692 was a 1960 cylinder head. I have no information that it was used for late 1959 although I could not rule it out.

My recollection is that there was a difference in the external machined finish of the heads between Flint manufactured and Tonawanda manufactured. I think on one or the other the "pyramid-shaped" casting symbol and underlying rectangular block on the ends were machined flat whereas the other was as-cast.

I would look for either casting number dated just before or on the same day as the block. That should get you the right part.

Flint castings are machined on the end; Tonawanda are rough cast. There should be no holes drilled in the end of the head for a Corvette.