Yes, the E-293S Elgin cam is the same one we used in John's engine. I purchased it from Internal Engine Parts Warehouse in Nashville and took it to Friendship Forest when we assembled the engine. To get an accurate lift curve on that cam, monitor the rate of lift AFTER the clearance ramp passes your dial indicator. You will see a rapid change in the rate of lift just as the clearance is taken up and the valve actually starts lifting off the seat. I don't recall the specified clearances Elgin recommends, but they're slightly different than the GM factory specs in the service manual. Elgin lists the cam as having a "290 degree" duration, but they're including the clearance ramps in that figure. The actual "valve open" duration is somewhere in the 260 degree range, give or take a little. Drop me a PM, and we can have a phone conversation about that cam if you like.
Jerry
