suffix code YW denotes it as `68, 220 hp, 327 C.I. You need to look at the head casting number as wellMy 1972 C10 does not have the original engine. The one that is in there is stamped with F0323YW. I have not been able to ID this. The casting # is 3858174. Thanks for any help.
It is YW. That is what I cannot decode. Could the W mean it is a warranty replacement?suffix code YW denotes it as `68, 220 hp, 327 C.I. You need to look at the head casting number as well
Matt the suffix code last two digits thru me off...The (YW) are you sure its YW and not YV or YU. So I`ve changed the engine profile...