89-93 heads same as 94-95 heads?

91BLOWNSC

Registered User
From what I heard of the 94/95 being made of better quality material and having a less porus surface, are there any differences between the two heads? Will all the coolant passages and what not line up if I used early model heads on a late model SC?? Thanks, Mark.
 
The ported heads on my 94 are actually 89 cores and everything works fine. I am not sure exactly what the change was..Thicker deck surface on the late models is what I remember hearing.
 
Yeah, I could be wrong, but I think the decks were thicker on the 94/95 heads. It had something to to with the redesign of them to help keep the gaskets from blowing if I remember correctly and help them run cooler too.

Anybody else know for sure, please chime in.

David
 
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