2010 Northstar 4.6L V-8 VVT ( LH2 ) 06/05/2009
Type: 4.6L V-8
Displacement: 4565cc (279ci)
Engine Orientation: L=Longitudinal T=Transverse L
Compression Ratio: 10.5:1
Valve configuration: dual overhead camshafts
Valves per cylinder: 4
Assembly site: Livonia, Mich.
Valve lifters: roller follower with hydraulic lash adjusters
Firing order: 1 - 2 - 7 - 3 - 4 - 5 - 6 - 8
Bore x stroke: 93 x 84mm
Bore Center: (mm) 102
Bore Area: ( cm2 ) ( total engine bore area ) 543.43
Fuel system: sequential fuel injection
Fuel type: premium fuel recommended
Applications: Horsepower: hp ( kw )
Cadillac STS 320hp ( 239kw ) @ 6400 rpm
Applications: Torque: lb-ft. ( Nm )
Cadillac STS 315lb-ft ( 427Nm ) @ 4400 rpm
Maximum Engine Speed: 6750 rpm
Engine Mass: ( kg / lbs ) engine plant as shipped STS - (195/429)
Emissions controls:
evaporative system
positive crankcase ventilation
MATERIALS
Block: cast aluminum with iron bore liners
Cylinder head: cast aluminum
Intake manifold: composite
Exhaust Manifold: cast nodular iron
Main bearing caps: cast aluminum
Crankshaft: forged steel
Camshaft: cast nodular iron
Connecting rods: powder metal
Additional features:
extended life spark plugs
extended life coolant
VVT ( Variable Valve Timing )
oil level sensor
electronic throttle control
Oil Life System
