S&S 136" M8 Engines MK136

Race only 136" engine specs: Cylinder Heads High-flow cylinder heads with premium seats, guides, valves, springs, and seals +1mm oversized intake and exhaust valves Valves are .030" longer than stock for improved valvetrain geometry 550 Gear drive camshaft .605" max lift valve springs High-strength alloy used in cylinder head casting, improved strength at high temperatures Enlarged cooling passage around the exhaust seats S&S Exclusive breather boxes Crankcase All premium quality components Patented Dual-Spray Piston Cooling Jets  Precision machined oil scraper Enlarged oil sump Contoured floor allows oil to easily drain back to the sump MK136 Forged pistons S&S performance oil pump and cam support plate Premium tappets and tappet cuffs Billet aluminum covers Sprocket shaft spacer included Champion spark plugs Retains stock engine height Includes Cam Cover Badge Powder coat finish matches factory finish Huge displacement increase means a huge power increase     49-State