Im debating on do an LT4 conversion (I did a search for this too):

Whats the minimum amount of parts required to do the conversion........

1) LT4 Heads
2) LT4 Intake

Do you HAVE TO HAVE new fuel lines, timing chain, anything???

 

You must not have done a proper search...this is one of the most talked about subjects on this board, wheather or not people are for it or against it. This should lead you in the direction you're looking for: http://web.camaross.com/forums/searc...der=descending