Eddy heads on 416 stroker question

I'm running the same heads ( except ported by Indy), and the same exact cam you have, and I use the Harland-sharp rockers, and an M1 single plane intake, all on a basicly stock (69') 340 bottom end. For a short time before I bought the Harland- sharps, I used a set of old 273 adjustable rockers and they worked fine as well.