416CI / 550HP GTO/MAS LS3 Small Block

New to the GTOPerformance Airboats lineup, LS Family of Engines. We start with a new LS3 GM Block with a 4.00″ bore, forged internal rotating assembly, 10.1:1 compression ratio, and aggressive hydraulic roller cam. The engine’s top half includes a pair of CNC ported LS6 heads, the intake is a matching high-flow Victor Jr. aluminum piece. With 560 ft/lbs torque and a conservative 550 HP rating, this is one of the best engine choices for an excellent performing ride boat.


  • New GM 6.2 Aluminum Block
  • Eagle 4.00 Stroke Crank
  • Eagle H-Beam Rods 6.125
  • DSS or Mahle Forged Pistons
  • Clevite H Bearings
  • Custom Comp Roller Cam  .621/.624 Lift
  • CNC Ported LS6 Heads  2.02, 1.6 Valves
  • Edelbrock Victor Jr Intake
  • Quick Fuel Q-850 Carb
  • MSD Programmable Ignition Box
  • L92 Truck Coils
  • Custom 10qt Oil Pan with Windage Tray
  • ARP Head Bolts
  • GM Performance Rockers
  • 1 Wire Alternator Kit
  • Water Pump & Serpentine Belt
  • Blue Printed & Dyno Tuned
All engines are computer balanced, blue printed and dynoed before shipping.  Engines also come with build documentation and a 2 year unlimited hour warranty.

Also available with Electronic Fuel Injection.  Equipped with GM LS6 intake, LS Coil Packs, Stand alone computer and fuel system.

Price:  $CALL


4600 W. Hwy 326, Ocala, Florida 34482 - Telephone: 352-401-9070
Hours: Monday-Friday 8:00am - 6:00pm Saturday: 10:00am - 4:00pm