This is my cam. Comp solid roller int lobe RX1718, exh lobe XCX1862
Int duration states 285, specs show 284 according to open/close on the card, measures 287. Maybe the opening ramp is ??? TDC has been verified. Measurements taken at the lifter. Which measurements are correct? Obviously not all of them. This cam has been in the motor for 500 passes where it is now. It does have a Jessel and plenty of clearance in both directions. So moving it after install is an option. 572, 15-1, ported Indy -1, Indy 440-25 cross ram, 2 edelbrock 750. 3345lbs normally runs 9.1x@146 best of 9.04@149. Where would you put it?
Doug
intake
Card
duration 285 open 30 BTDC close 74 ABDC 112 C/l
Actual readings
open 35 BTDC close 72 ABDC 108.5 C/L
4 advance 2 advance 3.5 advance

exhaust
Card
open 78 BBDC close 34 ATDC 112 C/L
Actual readings
open 76 BBDC close 32 ATDC 116.5 C/L
2 advance 2 advance 4.5 advance