ANNOUNCES THE NEW LSM 500
MARINE PERFORMANCE ENGINE

ALL ALUMINUM 450 CU.IN, FRESH WATER COOLED, COMPACT, LIGHTWEIGHT, VARIABLE CAM
TIMING, 550 HP HIGH PERFORMANCE MARINE ENGINE WITH ALL FORGED INTERNALS AND ECM
CONTROLLED ENGINE MANAGEMENT.

LSM 550 FEATURES:
LIGHTWEIGHT ALL ALUMINUM 543 LBS CUSTOM STAINLESS HEADER SYSTEM
COMPACT SMALL PACKAGING V-8 LARGE CAPACITY FUEL FILTER/SEPARATOR
PERFECT 5.7L IRON MOTOR RETRO-FIT HIGH CAPACITY OIL COOLER
ALL FORGED INTERNAL COMPONENTS 9 QT CAST OIL PAN SYSTEM
HIGH TORQUE VARIABLE CAM TIMING REMOTE OIL FILTER ASSEMBLY
FULL FRESH WATER COOLED SMALLER WIDTH IDEAL FOR TWIN INSTALLS
ECM ELECTRONIC ENGINE MANAGEMENT
 
LSM 550 SERIES SPECIFICATIONS:
Displacement:
450 cubic inches (7.4 Liters)
Bore & Stroke: 4.200" x 4.100"
Horsepower:
550HP (410KW) @ 5800 RPMS
Torque: 535 FT/LBS (718 NM) @4200 RPMS
**Weight: 543 LBS
Height: 32 inches with headers
Width: 34 inches with headers
Length: 32 inches bell housing to front most component
Block: Aluminum with ductile iron cylinder sleeves
Cylinder Heads: Aluminum high flow w/ roller rockers
Crankshaft: 4340 forged steel high strenth
Rods: Forged 4340 H-beam rods with ARP rod bolts
Pistons:
Forged 4318 alloy coated skirt mahle piston w/ full float pins & moly piston rings
Camshaft:
Billet hydaulic roller w/ ECM controller variable valve timing
Fuel System:
Fuel sequential port fuel injection w/high flow intake manifold, & 90mm throttle body
Oil System:
Fully integrated cast aluminum 9qt. Baffled oil pan. High volume crankshaft driven oil pump w/ large capacity remote oil cooler & remote oil filter assembly
Cooling System:
A complete coolant based fresh water closed cooling system with stainless raw water pump, engine mounted heat exchanger and aluminum water circulating pump with 160 degree thermostat
Exhaust System:
Full 4 tube equal length stainless water cooled header system with 1/2'' flanges and merge collector w/ v-band dry joint tip connector system.
Fuel Requirements:
89 Octane minimum (ROM)