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I'm new here and looking for advice.

Shovelrick said:
IIRC heads need steam passages? we put a set of rebuilt 350 heads on a 400 in the early 90's on my Gfriends 78 Z/28, my engine builder friend said they'd be great on the 400 and had the steam passages drilled, a cpl months later a long drive on I-75 proved that wrong, cooked the engine
Click to expand...
Many a heads have had to steam holes drilled without issue. Maybe he put them in the wrong place.
 
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