Edelbrock 8- Chev E-Tec 170 Exh Valves 1 550 X 4 930

1-piece, swirl-polished, hardened tip stainless steel exhaust valves with undercut stems for increased flow. Hard-chromed valve stems are 11/32in. except where noted The Edelbrock #9773 Exhaust Valve is a 1.55" 1-piece, swirl-polished, hardened tip stainless steel valve with undercut stems for increased flow. Fits Edelbrock #60797 Cylinder Heads Edelbrock part #182051 is a state-of-the-art Electric Fuel Pump offering maximum performance in a compact package. Chevrolet:Small-Block Gen I:262 (4.3L)-400 (6.6L)