AFR Stainless Exhaust Valve - 1.760 in Head - 11/32 in Valve Stem - 5.050 in Long - Big Block Ford H768001S The cut-out should have a

The cut-out should have a depth of 11mm

mild steel tubing

Each plate is shipped with stainless steel bolts and a gasket

Retains factory O2 sensors and catalytic converters

AFR Stainless Exhaust Valve - 1.760 in Head - 11/32 in Valve Stem - 5.050 in Long - Big Block Ford H768001S The cut-out should have aProduct Description: Exhaust Valve 1. 760 in Head 11 32 in Valve Stem 5. 050 in Long Stainless Big Block Ford 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