New Brodix 9 degree Big Block Chev Racing heads Pro-Stock Style, Intake valve angle been changed to 9 degree and moved towards center of bore, The Exhaust valves been move back away from the Intake this alloys for 2.550 Intake valves and 1.820 Exhaust valves, These heads come CNC Ported come stock with copper bronze seats and guides, These are by far the best conventional head on the market,The twisted flat valve design along with the 570CFM Intake and 360CFM Exhaust flow will produce 30-40 More HP and 20FT TORQUE over a 12degree Pro-filer, These heads are 2150 each Bare and 2495 each CNC Ported with 5 angle 55 Degree seat angle on Intake and 55 degree radius seat on Exhaust, contact mike for more info. We Also sell the Pro-Filer 12 degree head CNC Ported for 1995 each 513-353-1067 607-2592