NOS Y Block heads

NOS Y Block heads

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By iowa fords - 12 Years Ago

I have located a set of Y-Block heads # OK12, can't find that number anywhere. Does anybody know about these heads?

By aussiebill - 12 Years Ago

iowa fords (6/21/2013)

I have located a set of Y-Block heads # OK12, can't find that number anywhere. Does anybody know about these heads?

Certainly not a relative number, look in john mummerts site and there is list of heads etc. usually numbers are between exhaust ports or under the water inlet casting hole near intake port.

By awhtx - 12 Years Ago

Is 0K12 the casting date as in 0 (1960) K (October) 12 (12th)?

By Ted - 12 Years Ago

As Alan brings up, that number you posted could be a date code. Besides looking under the water jacket ports where the intake manifold bolts on to the heads for the something that looks like a head casting number, also look in the valve train area or on the deck surface where the heads bolt to the block.

By iowa fords - 12 Years Ago

I found the number C3TE 6090 B with a date code of 10/13/66

By Hoosier Hurricane - 12 Years Ago

They are '63 truck heads, and as such would be low compression with small intake valves.

By Hollow Head - 12 Years Ago

So, good candidates for turbo build up with larger valves and some port work Wink