[TimT]

You could change the cam timing to move the power down the rpms a bit.

However your talking about a small displacement engine. There isnt going to be alot of "umph" below 2500rpm. I dont know the application you intend to use this engine but if its a street engine you may have to live with a flat spot till the car comes on cam.

If its a race motor, once you get rolling just dont let the revs drop... shift at redline, dont let the revs drop below 4000 and have your gearbox set up to accomodate..

That isnt a really wild aggresive cam that you have.. .450 lift isnt extreme.

John has analyzed tons of cam and port combos... but try as you might your not going to get serious low end grunt out of a small displacement engine...