I'm using a CompCams Xtreme Energy camshaft designed for fuel injected cars. Its the only cam profile I could find that delivers good torque from idle to 5000 RPM and has a 114 degree lobe seperation. I didn't know when I started the project, but lobe seperation controls reversion (when the motor sucks water out of the exhaust manifold back into the cylinder). Reversion=broken motor sooner or later.