General Description

The Northstar V8 VIN Code 9 or Y is a 4.6L (279 cu inch) engine incorporating two intake and two exhaust valves per cylinder with individual cylinder head mounted camshafts for intake and exhaust functions (DOHC). The cylinder bore diameter is 93 mm (3.66 inch) and the piston stroke is 84 mm (3.31 inch). 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.