POSITIVE CRANKCASE VENTILATION REPLACE REPLACE MENT MENT DESCRIPTION VALVE DESCRIPTION VALVE CHEVROLET PONTIAC Ccnt d CV469 CV609 1955 57 All 6 cyl exc PB 5647228 1963 64 70 6 cyl 6418440 CV469 CV590 1958 All 6 cyl exc P13 5647228 1963 64 70 w 283 and 327engine 5649689 CV469 1959 62 All 6 cyl 5647228 ACADIAN C V609 cvso7 1963 64 All 6 cyl 6418440 1963 64 AI I 4 and 6 cyl 6418438 C V 590 C V 590 1963 64 All w 283 or 327 engine 5649689 1964 All 8 cyl 5649689 CORVAIR OLDSMOBILE C V584 C V606 1963 64 All 5649688 1963 64 AI l exc 33 6418408 CV639 1964 33 6420092 CHEVY II c 60 OLDSMOBILE F 85 1963 64 AI I 4 and 6 cyl 6418438 c v s s o 1961 62 All 2 BC 5647738 1964 AI 1 8 cyl 5649689 1961 62 All 4 BC 5647449 CHEVELLE 1962 All 31 47 6418408 cv607 1963 All 6418408 1964 AI I 6 cyl 6418438 1964 All V 6 6420192 cvsso 1964 All 8 cyl 5649689 1964 All V 8 6420092 PONTIAC BUICK CV469 CV204 1955 57 All 6 cyl exc P13 5647228 1959 62 All 5646180 cvass 1958 70 6 cyl exc PB 5647228 cv622 1963 64 All exc 300 engine 6418754 cvass 1959 62 70 6 cyl 5647228 cv656 1964 All w 300 engine 6420192 I