vortec heads website
just do a search for them..this topic comes up about twice a week:-)
basically, vortec heads are AWESOME for a 305, the only thing ou have to worry about is a new intake manifold b/c the heads have a different bolt pattern, and the combustion chambers are larger so you will have to mill them fown to 58 cc or you will lose a little compression.
basically, vortec heads are AWESOME for a 305, the only thing ou have to worry about is a new intake manifold b/c the heads have a different bolt pattern, and the combustion chambers are larger so you will have to mill them fown to 58 cc or you will lose a little compression.
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