Anyone have experience with installing larger valves in the new big block Vortec (7.4L) heads (heart chamber, swirl ramp in intake port)? I have a set that I'll be putting on a 496 for my 1-ton dually and don't want to take a chance on seats if GM has started making big block castings thinner/weaker - I'll just go with factory valve sizes and give up a few ponies. Thanks!
FCS Harmony Racing
'Cause if they catch you in the back seat trying to pick her locks,
They're gonna send you back to mother in a cardboard box...
You better run!