248 vs 263 Head

The only real difference I see between a 248 and a 263 head appears to be the 263 head is drilled for dowl pins. Anyone know of anything else?
 
I think you can, but you either have to drill the dowel holes in the '42 head, or pull the dowel pins from the '51 block. Is that what you found?
 

firstofeight

Active Member
I think you can, but you either have to drill the dowel holes in the '42 head, or pull the dowel pins from the '51 block. Is that what you found?

Truthly, I do not remember. I know no holes were drilled in the head. The block was "decked" .020. Machine shop could have removed them. I will have to revue my photos.

Ben
Just noticed the water thermostat housing doesn't line up:(
What does not line up?

Ben
 
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