CNC-Motorsports offers an endless variety of Big Block Ford 460 572-598 stroker kits. We offer everything from mild kits with pump gas pistons to wild fully forged rotating assembly kits to meet your racing needs. We offer quality name brands such as; Eagle, Scat, Callies, Lunati, JE/SRP, Diamond, and Mahle just to name a few.. Jon Kaase Racing Pro Stock port work and competition valve job produce outstanding flow numbers. Intake 500cfm @.800 lift. Exhaust 350cfm @.800 lift. Bare Cylinder Heads 1050.00 each. Complete with Pro Stock port work , Competition valve job, Beryllium seats,Titanium Valves, Race valve springs, Titanium Retainers, Ready to bolt on $8300.00 pair.