XE282S in my 408??? Big enough or bigger?

That's a streetable cam in a 408. It's not big by any measure for a 400+ engine.

We've run those in 340's and they are really aggressive at idle at that CI.

AutoXcuda has the 274S in his stroker and drives it a bunch on the street and highway. He has a video of it idling up here somewhere.

The 282S would be my personal limit on a 4" stroke for a TRUE heavily driven street driven car. But I like a car that idles nice, can drive and idle in 95+ degree weather, start right up, and you don't have to constantly chase the tune to run perfect. I hate flowmasters and rumpity rough idle does nothing for me.

Full TTI exhaust, X-pipe, super turbo mufflers. If I where to do it again, I get the 272S ground on a 112 centerline for an even smoother idle. I got the cam new on FABO for like $80.

[ame="http://www.youtube.com/watch?v=-8QSTlvdqSs"]416 Idling sound walk around - YouTube[/ame]