CALL SHANON WITH ANY QUESTIONS. PAIR OF NEW CNC PORTED 351C FORD ALUMINUM. FITS 351C, 351W, AND 302. 2.19 INTAKE AND 1.71 EXHAUST VALVES PLUS. MACHINED FOR 1/2 HEAD BOLTS. SPACERS AVAILABLE FOR 7/16 HEAD BOLTS. ASK US FOR THEM! BRONZE GUIDES AND HARDENED EXHAUST SEATS. 400 THICK DECK CAN BE MILLED DOWN TO 66cc. NEW ADVANCED PORT DESIGN FOR IMPROVED FLOW. SPRING PADS ARE MACHINED FOR LARGE DIAMETER VALVE SPRINGS. HAVE ALL OEM ACCESSORY BOLT HOLES. MADE FROM 356A AIRCRAFT QUALITY ALUMINUM WITH T6 HEAT TREAT. INTAKE PORTS ARE RAISED. REQUIRES SPECIAL PROCOMP INTAKE MANIFOLD. SMALL VARIATIONS FROM PICTURE ARE NORMAL. 7/16 ROCKER STUDS AND 5/16 OR 3/8 GUIDE…