I go away for a little while, and holy crap.:popcorn: There are some things to remember here. This is the first set of heads that Grey's has used. They used a combination that has been tried and true for a lot of different people. Their observation was that they did not make HP as something like ported Eddy's with similar flow number with THIS COMBINATION. Trick Flow wants to see dyno sheets because several shops are noticing the same thing. These are suppose to be STREET heads, so they should work with a cam this size. That said, we are entering an age where old combinations may not work anymore. Watch the Engine Masters show where they throw a single plane on a Ford 351W with a cam like the one tested at Grey's, and they pick up 20 HP, and made 450 HP. Their conclusion is that the heads that they used flowed well enough that the intake was the restriction in that combo. That could be the case here. Who really knows what is really going to make these work, this is all theory until enough heads get tested to know what, or what does not work. Grey's advise was to hold off buying a set until they figure out what is going on. It seems like solid advise, that is why my engine is at his shop.
