348915-A SB head casting number

[Nacho-RT74]

does somebody know something about that casting number ? a friend of mine is who gaves me that number to search info. I haven't seen personally the head.
it looks weird... 6 numbers casting number ?, with a letter ?. Closer I have seen is 3418915

[John_Kunkel]

That basic casting number was used on several engines from the '70 T/A 340 to the '72-'73 340 and 360. What is the intake valve diameter?

[Nacho-RT74]

dunno... but are you talking about the one with 6 numbers one ?

[Nacho-RT74]

look at the pics





they are taken from my FB, so let me know if you can't see them

[John_Kunkel]

Somebody at the foundry forgot a digit, all casting numbers should be 7 digits.

The 3418915 SB head came with two intake valve sizes...2.02" and 1.88".  Some folks make a big issue of letters like J and X near the spark plug holes but, other than valve size and some minor casting differences, all of these heads have pretty much the same potential.