Norris Camshaft?!

I think these are the specs for the Norris cam you have. The cam I have has the same markings on the front of it, I hope this helps.

Norris 270s specs are;
RPM Range:1800-5800 Valve Lash:0.022 EX-IN Valve Timing:0.006 , Duration:270, Lobe Separation: 110, Duration @ .050" Lift:224-224, Intake Centerline:106, Valve Lift:0.468-0.468, Lobe Lift:0.313 , Valve Timing @ 0.006 Lift: Exhaust Closes 21 ATDC Opens 69 BBDC 106% Intake 29 Opens BTDC
61 Closes ABDC