Head Trip

In order to use what you already have, my first thought is.........unless your tunnel ram intake for the big block can be ported to Max Wedge size..........I would go with the 240 Trick Flow. Man, a stock valved, mildly ported (260 cfm) iron head on just a 440 can get you to over 500 HP. AndyF has shown us the OOTB 240 can make over 700 HP.