MBP4960CT BluePrint Engines 496CI 460HP Stroker Marine Crate Engine, Big Block GM Style, Longblock, Iron Heads, Flat Tappet Cam

DESCRIPTION:
HP & Torque: 460 HP / 515 FT LBS
Compression Ratio: 9.0:1
Cast Iron Heads
Flat Tappet Cam
Cast Steel Crank
Forged Pistons

BLOCK:
Hand picked seasoned block
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
4.250" Bored .060" over
2-Piece Rear Main Seal
Mech fuel pump provision: Yes
Standard Deck

ROTATING ASSEMBLY:
New BluePrint Cast steel crankshaft
4.250" Stroke
Forged H-beam 6.385" connecting rods
Forged pistons
Internal

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

CAM SPECS:
Cam Type: Flat Tappet
.544 Intake .547 Exhaust
226 Intake / 236 Exhaust duration
@ .050 - 112 degree lobe separation

IGNITION TIMING:
34 degrees total at 3500 RPM

ALSO INCLUDES:
Marine intake manifold
Chrome valve covers
Oil pan
Brass freeze plug
Dyno test results shipped with engine

WARRANTY:
12 month unlimited hour on pleasurecraft only. No warranty on commercial use.

NOTES:
Replaces Standard Rotation engines only. Not available as reverse rotation.
WARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov