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The Manley Pro Flo exhaust valves for Chevy LT-1 engines with a 1.590" head diameter are part of the Extreme Duty Series, built for the most demanding motorsports and marine applications. These valves target Top Fuel, Funny Car, Big Block Chevy marine, and Small Block Chevy restricted circle-track use. They feature swirl-polished under-head areas, fully machined combustion faces, chrome stems, hard tips and XH-432 XtremeAlloy construction for durability under extreme heat and force.
Manley Chevy LT-1 1.590 Head Diameter Pro Flo Exhaust Valves (Set of 8)
