GM Powertrain takes its expertise in designing outstanding Vortec truck and SUV engines and leverages it to make sophisticated yet extremely durable marine engines. In addition, the well recognized Vortec brand name by itself has become a valuable selling tool for OEMs.
High flow cylinder head design with Swirl-Wing technology
Enhanced valvetrain with offset intake rocker arms to enable a more direct intake port
Center feed stainless steel fuel rail
103.25 mm bore block with structural improvements and nodular iron bearing caps
New sumped pistons with 9.1:1 compression ratio
6.52 gms/sec. high flow injectors
1.9L /rev Roots type four lobe rotor supercharger with 160 deg. rotor twist