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The EPA is not going away anytime soon. The regulations are going to continue to drive the manufacturers to create and adopt new technologies with each generation of engine. Overall this is a positive. If it weren't for these stringent regulations we wouldn't be driving mass production cars delivered with 460 HP in stock trim that get 30 MPG on average. The EPA regulations effectively force the manufacturers to increase efficiency which in turns creates the potential to make great HP figures without going to radical cams. It would have taken a fairly radical H/C setup on the LS1 to approach what the LT1 is doing stock (with cats).
Poo pooing these new technologies is just a display of ignorance. Yes there are compromises here and there but I don't think some here truly appreciate the engineering that has gone into the LT1 or the LT4. People are already freaking out over carbon buildup and there isn't a single documented case of a LT1 that has suffered any power loss from it. How silly is that? If you are that worried go invest some $ in a Mishimoto catch can and be done with it. It works very well.
Some of you want to do motor swaps and deal with all of the issues that go along with that but can't handle getting 8 valve stems cleaned up?????
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