Edelbrock heads

I would never run any aftermarket (or OEM for that matter...LOL) part OOTB without at minimum a thorough visual check. Yes many have run Eddy (and other heads) OOTB with success, others want the peace-of-mind that comes with an inspection. I would at the very least get a sample of chamber cc's and disassemble to inpect the vj and guide/retainer clearance.