I was a little thrown by the order of the cam lobes intake and exhaust, I'd never considered it but design-wise it's one good way to make everything fit together in a confined space.
Yeah, I always smile and shake my head when I see this page with its measurements from an ideal sandcast engine. When I was measuring lots and lots of these cams (in the 1970s) it was very rare to find one with an intake height of 1.411", as spec'd. Most of them were in the 1.398"-1.405" range, brand new or less than 1000 miles, for the intake lobes. The exhausts were usually close, though.
More important was/is the duration and overlap numbers. These are not so easy to measure: the simplest way without a fancy test rig is to use the engine itself, when assembled (and turn the alternator bolt, please, so you don't bend the spark advancer's shaft) and a degree wheel with a dial indicator on the rocker tip, set to 0.000" clearance. The F0 and later engines use a 0 degree BTDC intake opening (at 0.002" valve lash) while the early engines used 5 degrees BTDC. This became less by the K3, usually around 3 degrees.
