GM Northstar L47 LMP

GM Northstar L47, V8 (90ยบ) cyl, 4 stroke, petrol engine
3990cc, 93.0 x 73.4 mm
aluminium block 205.7mm height, aluminium alloy head, 102mm bore spacing
5 main bearings, cross plane crankshaft
575 bhp / 429 KW @ 7200 rpm, 2001+: 600 bhp / 448 KW @ 7500 rpm
650 Nm / 480 ft lbs @ 6000 rpm, 2001+: 673 Nm / 497 ft lbs, 2002+: 746 Nm @ 5500 rpm
5 main bearings, cross plane crankshaft
2 overhead camshafts per bank (DOHC), 4 valves / cylinder - 32 valves total. 33 mm intakes and 29 mm exhausts valves diameter
aspiration, 2 x IHI Turbochargers with Secan air-to-air Intercooler, Bosch multipoint electronic fuel injection, 2 x inlet restrictors 32.4mm diameter.
2002+: 2 x Garrett Turbochargers
Pressure 1.5 bar
firing order 1-2-7-3-4-5-6-8
water cooled
Dry sump with oil to water heat exchanger (oil tank in front of engine)

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