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Home >> Cadillac >> 2010 >> STS 3.6 V, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Engine Mechanical - 4.6L (LH2) - Description And Operation) >> Description and Operation >> Engine Component Description >> Notes

Engine Component Description: Notes

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Fig 1: 4.6L Engine
GM1349285Courtesy of GENERAL MOTORS CORP.

The Northstar V8 VIN Code A is a 4.6L (279 cu in) engine incorporating two intake and two exhaust valves per cylinder with individual cylinder head mounted camshafts with camshaft position actuators for intake and exhaust functions (DOHC). The cylinder bore diameter is 93 mm (3.43 in) and the piston stroke is 84 mm (3.31 in). The cylinders are arranged in two banks of four with a 90 degree included angle. The left, front, bank of cylinders are number 2-4-6-8 and the right, rear, bank cylinders are 1-3-5-7. Engine firing order is 1-2-7-3-4-5-6-8.