Outflows Any As-Cast Stock Head
Sold individually, this bare cylinder head is the first aluminum design interchangeable with stock big block heads, bolting directly to B/RB blocks. Cast from a high-strength aluminum alloy 40lbs lighter per pair than stock, other Stage VI features include:
210cc rectangular intake ports raised for extra flow & outputExhaust ports also raised with stock header pattern maintained3/8" bronze alloy valve guide inserts2.14" intake and 1.81" exhaust seatsUses stock valvetrain components78cc closed heart-shape combustion chamberThick .450" deck permits milling