I've got a big block apart for various reasons and I'm double checking it has the right parts in it. It was assembled by a shop and I picked it up and installed it as it was a few years back. I explicitly remember asking the builder if he had to change out the springs on the heads to accommodate for the roller cam and he said no.

Heads are Edelbrock 84cc RPM Performer and the cam in a Comp XR280HR roller.

These heads come in two flavors: dual spring for roller cams and single for flat tappet. Both the dual and single have dampener springs. Looking at what I have they look like singles with a dampener (unless I'm blind). I can't find pressure ratings from Edelbrock. Comp requires 370 to 395 pounds open spring pressure.

These are singles with a dampener? Right?