F2305P-08 Ferrea Chevrolet SB 1.6in 5/16in 5.450in 14 Deg Flo Hi-Temp +.500 Comp Plus Exhaust Valve - Set of 8 Sensors 11557-8 Manley Chevrolet Big Block

11557-8 Manley Chevrolet Big Block Exhaust Valve Kit - 1

This works for all plastic connector M1 ECU's both port injection and direct injection

This is due to higher friction on the studs as well as inconsistencies in the clamping force of the fasteners when motor oil or other low quality lubricants are used

751-5000 ARP 5/16-24 x 5

622in Stroke -12cc Dish Extreme Duty Piston Set

F2305P-08 Ferrea Chevrolet SB 1.6in 5/16in 5.450in 14 Deg Flo Hi-Temp +.500 Comp Plus Exhaust Valve - Set of 8 Sensors 11557-8 Manley Chevrolet Big BlockF2305P 08 Ferrea Chevrolet SB 1. 6in 5 16in 5. 450in 14 Deg Flo Hi Temp +. 500 Comp Plus Exhaust Valve Set of 8