Exhaust Valve Stem Seal 1pk Valve Stem Seal - Positive Stop - 5/16 in Valve Stem - 0.630 in OD - Steel Body / Viton - Each

Exhaust Valves 8pk 1.880 x 5.450 Exhaust Valve - 1.880 in Head - 11/32 in Valve Stem - Stainless - Edelbrock Performer RPM 454-O / 454-R - Big Block Chevy - Set of 8

1.235 Dual Valve Springs (8pk) Valve Spring - Dual Spring - 300 lb/in Spring Rate - 0.940 in Coil Bind - 1.235 in OD - Set of 8

Exhaust Valve - 1.550 in Head - 11/32 in Valve Stem - Stock Length - Stainless - Small Block Chevy - Each

1.095 Valve Spring Set Outer (8pk) Valve Spring - Outer - 260 lb/in Spring Rate - 0.720 in Coil Bind - 1.095 in OD - Set of 8