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Quote:

48* only.

Rick, they did a 59 version, just hacked away the intake runner. Dont think you can tell them from any numbers stamped or cast into them from a 48 head. 59 versions can be un-ruined with a welder.

The 59 usually had the outer bolt holes shaved off though.



This is my impression.
The trenches cut for pushrod clearance are a dead giveaway on the 59 degree heads and it is a crap shoot whether the outer bolts were removed or not.
I have seen both.
I'd lean toward sprint car or road race with the port injection holes machined.
Nothing that can't be plugged.
I suppose they are worth scrap prices.......I'll even pay shipping.
When you say " flea market " I don't even think I want to know what they sold for.