Adv. duration 274

@.050           226

lobe lift         .295

lobe centers   112

intake opens   29 btdc, 5 btdc @.050

intake closes   65 abdc, 41 abdc @.050

exhaust opens 73 bbdc, 49 bbdc @.050

exhaust closes 21 atdc, 3 btdc @.050

valve adjustment .015

Here’s the specs from the supplied card for the Clay Smith C-284-8-B camshaft (284S).

Intake opens 34°

Intake closes 70°

Exh opens 70°

Exh closes 34°

Int and Exh dur at 050 = 236°

Int and Exh valve lift = 0.462” based on 1.54 rockers

Here’s some more info on the 284 cam that I came across in my notes.  These numbers are from an actual cam installation.

Intake opens     33° BTDC    @ 0.018”

Intake opens     12° BTDC    @ 0.050”

Intake closes    41° ABDC    @ 0.050”

Intake closes    60° ABDC    @ 0.018”

Exhaust opens  69½° BBDC  @ 0.018”

Exhaust opens   48° BBDC    @ 0.050”

Exhaust closes   5°  ATDC    @ 0.050”

Exhaust closes  24° ATDC    @ 0.018”