What combustion chamber size on the W2s? The 587s?
Meaning what compression ratio will you end up with?

I don't think your XE284 camshaft will appreciate the springs in the W2s. It's a bad combination.

What you need is torque, and the tunnel ram is king there. You have a set of solid rollers, I'd plan on using them. Have Bullet or somebody grind you a solid roller cam, you don't want it too big. There are small solid roller lobes out there.

I'd choose something with the valve opening and closing events similar to the .474 cam, but with more lift. Something like 232 degrees at 50 lift and 0.565 gross lift. I'd pick a longer LSA to allow the ram to work.

How's that sound, cam gurus?

R.