302 heads are fine for a mild build. Put a 340 cam in it, a 4bbl intake on it and a 318 with 302 heads can run nice. Is it even close to 300hp? Probably not, it is worth spending any more money than free on 302 heads for HP builds? Nope.
Now if they had made 308 heads with a closed chamber then we'd be talking.
Use magnum, heads if you are going with a stock type casting for a HP build.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
