Re: V-8 head part nbr vs cast nbr

Posted by Owen_Dyneto On 2008/9/17 8:55:44

If in fact you can successfully make a correlation between casting numbers and the various finished part numbers that were derived from a single casting, it will be quite an achievement. These casting numbers which appear on cylinder heads, oil pumps, etc. have confused a lot of folks over the years, thinking they are part numbers. Good luck on your venture.

I assume you're familiar with the Service Counselor issue which discussed the change from machined to cast domes on the (1955) 320 engines and the resultant change in casting numbers? It notes that the characters "CD" will be added to the casting # 440854 for cast domes (though it was not added for the earliest cast heads). The cylinder head with the machined domes was 440689.

The casting number on my spare 56 engine (Utica #D-6748)which I believe to be unmolested is #6480408CD, as is the number on my 56 Caribbean (Utica #C-1137). Hope this helps.

PS - I looked long and hard at the last digit of the 56 casting number and believe it is an "8", not a "6", though it's less than perfectly clear.