[Gaz64]

Glen,

That is true up to a point.

A good rule to follow is spend money in the heads, then you can pick the appropriate cam, milder than most would go for.

You can make more reliable power and a better spread of torque with a mild cam (modern grind with less difference between seat to seat & .050 timing) and correctly ported heads,
compared to poor breathing heads and a large cam. You also don't have as much stress in the valvetrain (friction and inertia etc).

The majority of new cars these days have four valve heads for this reason, that is how the factory can offer the flat torque curves the engines have.