Edelbrock 8 Intake Valve 2 30 BBC Victor Heads

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 Edelbrock 8 Intake Valve 2.30; BBC Victor Heads Edelbrock Performer RPM II Dual-Stage Nitrous System #70082 is designed for those who want to add power in stages to soften the "hit" of the nitrous system. This system is for use with square-bore carburetors. Chevrolet:Big-Block Mark IV:396 (6.5L)-502 (8.2L)