Manley Severe Duty Exhaust Valve - 1.880 in Head - 0.342 in Valve Stem - 5.522 in Long - Big Block Chevy 11845-1 600080137 1/2" NPT rear port for

1/2" NPT rear port for temperature sender and two 3/8" NPT ports for cooling lines

or want to compliment the performance of your MSD Blaster Ignition

These BBK Mass Air flow sensors offer huge air flow increases over stock and can add up to an additional 15 rear wheel horsepower depending on modifications

It is available in straight or 90 degree styles

Manley Severe Duty Exhaust Valve - 1.880 in Head - 0.342 in Valve Stem - 5.522 in Long - Big Block Chevy 11845-1 600080137 1/2" NPT rear port forProduct Description: Exhaust Valve Severe Duty 1. 880 in Head 0. 342 in Valve Stem 5. 522 in Long Stainless Big Block Chevy Sold Individually Manley Performance high performance and racing engine parts have been powering winners since 1966. Since our inception in March 1966, Manley Performance Products has been at the forefront of the high performance automotive industry. Founded by gearhead Hank Manley shortly after his graduation from Brown