It's like Twisted says,"good for base line for any bolt-on build" What Tom has done has compared lots of combos on the same short block on the same dyno in a short time. We all know that any one of those combos might be maximized to better results. Also that in some cases higher RPMs might have favored some of the equipment. Some of the results are interesting such as the stock valve size not doing better with bosses removed and lumps. Does that mean the stock ports will flow all the valves will handle? Does the CFM increase with stock valves and lumps but no gain in torque or HP? Are there flow bench #s for this. What size valve begin to show gains, 1.84? Is there more to learn about the intake vs. exhaust ratio. is getting spent gasses out more important that we think? The more we learn the more questions there are. And I agree about the PES manifold it is definitely not a restriction! Velocity killer maybe. Beater
