Should be good for roughly 600 power and 600 torque. We do a fair number of 505 big block with the 240 heads and they always make great power and torque. Really nice beasts for the street.
I would think more than 600/600 … I run a nearly identical cam in my 408 with W2s and it dynos at 490/490 with only 9.5:1 compression.
But maybe the extra cubes won’t make as much difference as I think ?
