AFR Inconel Exhaust Valve - 1.880 in Head - 11/32 in Valve Stem - 5.450 in Long - Big Block Chevy Winch Parts & Components Chevrolet: G20 Van 68 -

Chevrolet: G20 Van 68 - 73 5 L Engine

RacePort Pro

1973-1981 Pontiac Firebird

adjustable from 3-15 PSI

AFR Inconel Exhaust Valve - 1.880 in Head - 11/32 in Valve Stem - 5.450 in Long - Big Block Chevy Winch Parts & Components Chevrolet: G20 Van 68 -Product Description: Exhaust Valve 1. 880 in Head 11 32 in Valve Stem 5. 450 in Long Inconel Big Block Chevy For over thirty years Airflow Research has been defining technological leadership in cylinder head manufacturing and flow dynamics. This complete commitment to performance has enabled Airflow Research's cylinder heads to find themselves on the fastest race cars and the most powerful street machines in the country. As every engine builder will