Putting a cam in an engine that has a lot more lift than what the head is capable of having flow for is pointless and a step in the wrong direction. Its at that point that additional head work is required to get the most benefit out of the combo. Doing the head work with the bigger valves and lumps will be the best money you will ever spend. It will provide the biggest increase to your engine and is well worth the money and effort. Even if you put bigger valves in your head and cut out the bolt bosses but didn't put the lumps in at this time, you can always go back and install them later when you have the extra money. Tom's dyno testing also covered this mod to the same head with and without lumps and showed it still have good power increase by itself. But at least you will have the bigger valves in there and might not get you there 100%, but you will still get a huge benefit from doing just that.
