cam advice

[zyxvutnow]

I'm trying to decide the cam to use in my 289 build. My friend and I are trying to come to an understanding; not sure we're thinking the same. I have a good 67, 289 that's bored .060 over. I'm not stroking it so it will run about 330+ cubes. I'm making it beefy enough to be cobra (ERA is building the 289FIA for me and should be done springtime): SCAT steel crank, keith black hypereutectics, manley rods, mogul rings, etc.

I'm talking to Comp Cams about an extreme energy cam, I want to use the new technology rather than going with the retro-fit cam. I want an idle that doesn't make it hard to tune--I'll be making it a roller rocker cam. The two I've/we've come down to are the XE266HR and the XE274HR. I'd like to push to the larger cam to use the power, but I don't know how to judge discussions about "idle lopeyness". I know the engine could handle an even larger cam like the XE282HR, but it will be primarily a street machine, and I want it to be the most with the best idle. Define "best": I don't want my wife and daughter to be so frustrated by the ride.

Any help or thoughts would be appreciated

Ralph Caraffa
(soon to be the new guy on the block in St. Louis)