GM ALUMINUM CYL HEADS 3946074 LISTED AS FITTING1969 CAMARO ZL1 427 430 HP MODELS AND 1969 CORVETTE 427 L88 AND 427 Z11 430 HP MODELSHEADS2.19 INTAKE AND 1.88 MANLEY EXHAUST VALVES 3/8\" VALVE STEMSSPRINGS DUAL 1.465 ODMANLEY SCREW IN STUD AND GUIDE PLATESHEADS HAVE BEEN PRESSURE TESTED AND ARE OKEXHAUST PORTS ARE STOCK 1.900HEADS HAVE SPOTS FOR EXTRA HEAD BOLTS USED ON ZL1 MODELS
ONE HEAD HAS 2 CENTER INTAKE PORTS HAVE BEEN PORT MATCHED TO GASKET 1.510 X 1.8501 INTAKE GUIDE HAS BRONZE LINER AND ALL ARE TIGHT AND WITHIN SPECSONE HEAD IS MILLED AND OTHER HEAD NEEDS TO BE MILLED TO MATCH [SEE PICTURES]HEADS NEED SEVERAL HELICOILS IN EXH PORTSCOMBUSTION CHAMBER HAS BEEN SMOOTHED IN SOME BUT IS ORIGINAL IN OTHER CHAMBERS AND ONE HAS A FEW DINGSHEADS NEED TO BE MATCHED [COMBUSTION CHAMBER AND INTAKE PORTS]
DATE CODE ON ONE HEAD IS 10 10 69 AND OTHER LOOKS LIKE 09078D [SEE PICTURES]HEADS HAVE WINTER SYMBOLS AND OUTER CASTING HAVE BEEN SMOOTHED [SEE PICTURES]
PARTS ARE SOLD AS ISPARTS MUST BE CLEANED AND MATCHED PRIOR TO USESORRY NO RETURNS

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