SBC 245cc CNC Alum Heads Eliminator NPP Racing

The SBC 245cc CNC Alum Heads Eliminator NPP Racing cylinder heads from Air Flow Research are designed for serious small-block Chevy engine builders and competitive racers. These assembled heads provide the flow characteristics and combustion efficiency necessary for high-RPM eliminator-class racing, where even marginal gains can lead to significant power increases and improved lap times.

Featuring a 245cc intake runner volume optimized for mid-to-high RPM performance, these CNC-ported aluminum heads are paired with a 70cc combustion chamber that allows for aggressive ignition timing and fuel delivery tuning. The 2.125-inch inlet and 1.600-inch exhaust valve sizes maximize flow area while ensuring structural integrity under competitive conditions. The angle-plug configuration enhances spark positioning for optimal combustion efficiency.

Engine builders and racers will appreciate the 1.550-inch valve springs, which provide adequate spring pressure for mechanical and solid-lifter camshaft profiles. Weighing approximately 62 lbs per pair, these heads are consistent with modern aluminum casting practices, contributing to reduced reciprocating mass and lower engine inertia for enhanced performance.