Alaska Frontier Fabrication

Information

2020 Kodiak Marine Engines Vortec 4.3L V6

Features may include:

• 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.

• Lead-free main bearings and balance shaft rear bearing

• Integral Air Fuel Module (IAFM) inlet manifold with port fuel injection available

• Cracked powder metal connecting rod to more accurately position the cap to the rod during engine assembly. A high-flow cylinder head with straighter intake ports and a higher compression ratio delivers impressive horsepower

• High-silicon cast aluminum pistons offer excellent durability

• Roller valve lifters, roller rocker arms and true roller timing chain for reduced friction and improved performance

• Composite rocker arm covers for reduced noise and resistance to corrosion

• Cylinder case has brass water jacket core support plugs for resistance to corrosion

• Water pump is effective rotating in either a clockwise or counterclockwise direction

• Nodular iron crankshaft has rolled fillets for increased strength

• Water pump casting eliminates internal bypass

• Investment cast rocker arms

• 58X crankshaft position encoder with digital sensor to ensure accurate ignition timing throughout the operating range

• Cylinder block incorporates the following new features:

• Dual flat response knock sensor bosses

• Revised bolt pattern for new front cover

• Threaded block heater/drain hole - left side

• Cast aluminum front cover epoxy painted for corrosion protection

• Aluminum oil pan is now painted for corrosion protection