Ferrea Chevy SB 1.6in 11/32in 5.16in 0.25in +.250 6000 Series Exh Valve - Single (Drop Ship Only) - F6147-1

Ferrea Chevy SB 1.625in 11/32in 5.16in 0.25in 15 Deg S-Flo +.200 6000 Series Exhaust Valve - Single

Ferrea Chevy SB 1.6in 11/32in 5.3in 0.25in 12 Deg S-Flo +.400 6000 Series Exhaust Valve - Single

Ferrea Chevy SB 1.6in 11/32in 5.4in 0.25in 12 Deg S-Flo +.500 6000 Series Exhaust Valve - Single

Ferrea Chevy SB 1.6in 11/32in 4.96in 0.25in 12 Deg Flo +.050 6000 Series Exhaust Valve - Single

Ferrea Chevy SB 1.6in 11/32in 5.01in 0.25in 12 Deg S-Flo +.100 6000 Series Exhaust Valve - Single