Wut'n'ell is the intake centerline on a P4120231

The old MP small block book says 106 installed centerline. I prefer to install them 4*-6* advanced. I profiled the lobes on that same cam a couple of years ago. The Mopar specs are way off what the cam actually is.

true advertised duration @ .006
294*.....MP claims 284*
true duration @ .050
238*.....MP claims 241*
true duration @ .200
143*.....MP no specs

Pretty primitive grind by today's standards.