2010 Northstar 4.6L V-8 ( LD8 ) 06/05/2009
Type: 4.6L V-8
Displacement: 4565cc (279ci)
Compression ratio: 10.0:1
Engine Orientation: L=Longitudinal T=Transverse T
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 DTS 275 hp ( 205kw ) @ 6000 rpm SAE CERTIFIED
Applications: Torque: lb-ft. ( Nm )
Cadillac DTS 295lb-ft. ( 400Nm ) @ 4400 rpm SAE CERTIFIED
Maximum Engine Speed: 6700 rpm
Emissions controls:
evaporative system
exhaust gas recirculation
positive crankcase ventilation
air injection reaction
Engine Mass: (kg/lbs) ( engine plant as shipped ) ( 195.64 / 431.33 )
MATERIALS
Block: cast aluminum with iron bore liners
Cylinder head: cast aluminum
Intake manifold: composite
Exhaust manifold: dual wall laminated stainless steel (L37/LD8)
Main bearing caps:cast aluminum
Crankshaft: forged steel (revised 10/17/03)
Camshaft: cast nodular iron
Connecting rods: powder metal
Additional features:
extended life spark plugs
extended life coolant
electronic throttle control
Oil Life System
