Edelbrock 8- Int Valves 2 14 X 4 91 Chrys 60929 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-Int Valves 2.14 X 4.91 Chrys; #60929 Heads Edelbrock Performer RPM Kit #70086 includes everything to upgrade an existing Performer RPM Kits (#70053 or #70035) to Performer RPM II. This system is for use with 4500 Series carburetors. Chrysler:Big-Block B-Series:383 (6.3L)/400 (6.6L);Chrysler:Big-Block RB-Series:413 (6.8L)/426 (7.0L)/440 (7.2L)