Are these numbers with the serpentine belt and all the accessories?
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Can't argue with results. 556 HP and 486 toque out of a little ole 370" engine is stout. Honestly when it idles down to 750 rpm you can't even tell there is a "cam in it". Because of the stock piston design you can't put a lot of duration in it or even open the intake valve earlier to lower your peak torque RPM. I do believe the MP intake is worth power over the XV but the XV is 1)available and 2)will not require a hood scoop.
Just goes to show what a good flowing set of head will do for ya. Going from 7" of vacuum to no vacuum yeilded ZERO difference in power (with the stock ring package that Steff ran)
The flat/broad torque curve is really impressive and will really pull like a freight train in high gear.
