Are the heads for a 94 Z aluminum or cast? Are they the same heads that are on a 96 Z?

 

The heads on a 94 z are aluminum. They are usually thicker castings which are better for porting. I believe that the casting number is either 643 or 374. These would be the best heads for max porting.
Hope this helps.
Kory

 

They are both. Cast aluminum.

No, as already mentioned.

 

Thanks. Thats exactly what I wanted to hear.