Dyno proven to add nearly 100rwhp and 100ft/lb torque to your 460 EFI powered truck or motorhome. Power and torque gains are off idle to redline. These heads come standard with oversized stainless steel high flow intake and exhaust valves, lightweight beehive valve springs, chromoly retainers, 10 degree machined locks and viton valve seals. The heads begin as magnaflux tested crack-free cores and recieve new valve guides, precision machined 5 angle intake and radius exhuast valve job, 5 axis FULL cnc porting, -.020" deck surface with CBN cutter for perfect sealing, deburring, final washing and precision spring height set up for either flat tappet or hydraulic roller applications up to .600" lift. Price is for PAIR of heads.