ProMaxx Performance Small Block Chevy Vortec Cylinder Heads

New SBC Cast Iron Vortec Head Performance

ProMaxx Performance Small Block Chevy Vortec 185cc Cylinder Heads feature an all-new cast iron casting. Perfect for Street, Strip, or Oval Track Applications, these heads are machined with large diameter spring pockets to handle higher lifts than stock while being drilled for both Vortec and carbureted intake patterns. Assembled cylinder heads use 2.020 in. intake/1.600 in. exhaust valves, valve springs with .575 in. max lift for hydraulic flat tappet camshafts or .500 in. max lift for hydraulic roller camshafts, 3/8 in. screw-in studs, and guide plates.