416 W2 on the dyno w/cam swap

evil66 said
Very nice combo. Do you know what the lift was on this cam at the lobe or valve(with 1.5 or 1.6 rockers). Also what sort of power increase do you think the roller is worth over a flat tappet solid?

I have a 248@50 comp solid flat tappet with 540 net lift in mine with unported w2s and I think there must be a lot left on the table with my cam and unported heads compared to your combo. Mine seems to be around 450 to 460hp at the moment.

Lift was .616"/.622" at the valves. Estimating a power difference between a roller and a flat tappet is extremely difficult-if not impossible. My WAG would be "Not as much as you think" over the RIGHT flat tappet.

Sounds like you have the Comp 294S . That is a pretty good cam in my experience. W2's NEED to be ported--they stall hard and early. The good news is that they are very easy to improve upon. J.Rob