Marine 496 Engine Specs (MBP4960CTC)

MBP4960CTC_med

460 HP/515 ft/lbs
$7,995.00

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PART NUMBER: MBP4960CTC
BLOCK:
  • 4 Bolt Main .060 over block, two piece rear seal, drivers side dipstick
  • Square and parallel decked
  • Align honed main bearing bore
  • Cylinders honed on computer controlled machine to within .0002
  • straightness and roundness
  • Cylinders are sonic tested for thickness
ROTATING ASSEMBLY:
  • New cast steel crankshaft internally balanced
  • New 4340 forged connecting rods
  • 150,000 psi rod bolts
  • Forged flat top Pistons
  • Hastings moly rings
  • Rotating assembly balanced to within 2 grams
  • Melling high volume oil pump
  • Flat tappet hydraulic lifter .544 intake lift, .547 exhaust lift
  • 226 intake, 236 exhaust duration @ .050, 112 degrees lobe separation
  • Heavy duty double roller (high performance) timing set
CYLINDER HEADS:
  • GM cast iron oval port cylinder heads with screw-in studs and guide plates
  • 1.509 dia. Valve springs w/ damper. Hardened retainers & keepers. 2.25 swirl
  • polished intake valves, 1.88 swirl polished exhaust valves
  • Elgin hardened push rods
  • Long slot rockers with postitive lock adjusting nuts
A TON OF EXTRAS:
  • Marine intake manifold
  • 9.0 to 1 compression
  • Chrome valve covers
  • Cad plated marine oil pan
  • Brass freeze plugs
  • All engines are dyno tested on state-of-the-art DTS dyno and come with
  • a complete dyno sheet
  • Marine 800 CFM carburetor
  • Marine mechanical fuel pump
  • Ignition system w/ plug wires and coil
CRITICAL SPECS:
CAM: .544 Int / .547 Exh & 226 Int / 236 Exh duration @.050 - 112 degree lobe seperation
HORSEPOWER: 460 @ 5300 RPM
TORQUE: 515 @ 4300 RPM
COMP. RATIO: 9.0 to 1
IGNITION TIMING: 34 Degree Total
WARRANTY:
 12 month unlimited hour warranty on pleasurecraft only. No warranty on commercial use.