These are the same cylinder heads used on all of RGR's Custom 322ci Billet Long Blocks including Justin Burchams Record Setting 3v running 8.48 @ 163mph. These are the baddest heads on the market for any Blower, Turbo, Nitrous or HI HP N/A Engines.
Fully assembled w/o camshafts
Intake flow rate 315 CFM
Exhaust flow rate 225 CFM
RGR Custom Valve Job
Ferrea Comp. Stainless 1mm Oversize Intake Valves : SINGLE GROOVE!
Custom Hi Temp Super Alloy 1mm Oversize Exhaust Valves : SINGLE GROOVE!
Ford valve seals
Ferrea Custom Titanuim Retainers & Ferrea Custom Locks
RGR Custom Hi REV Valve Springs good to over .600 Lift & 11,000 RPMS.
Your heads are required