[Super73]

PGA,

I get what you are saying. My buddy Dan built a 540" motor for another friend of mine. It wears box stock cnc heads, steel rods, single 4500 and makes 98x hp at the crank on gas (69x rwhp). It moved his 3,600lb Chevelle to a 9.4x NA.

While a 598" should make 1100hp (call it around 850rwhp), I am not sure that will get me to an 8.50 NA in my current 3,120lb truck. I have been 9.20 @ 144 with roughly that power now (850rwhp). Truck will gain some weight even with an alum big block. Yes, my 60' wasn't there (1.41 on the 9.20 pass) but I still think I will need a kit to do it. Might not be a big one, but probably a tickle.