pos damage if I shear the crank Damp Key???

My engine

Mech 110 or 112 Lobe and 528 lift

I am back and forth between A centrifigul and A roots style.(you can't beat the looks of a roots!)
Why did you switch to the ATI from the BDSI am familiar with the excess heat generation of the roots and the lower torque response

Go with a wide LSA on the cam.

Hemi-itis switched his damper to an ATI Super Damper, not from a centrifugal to a Roots blower.