What is the placement for the cylinders on a 2009 Cadillac STS 4.6L motor? It's a Northstar motor and is situated with the cylinders running from front to rear. We were told that the car was giving a code for a misfire at Cylinder 5. We've changed all of the plugs and now we are looking to change the ignition coil for that cylinder.. GM Northstar 4.6L V8 L37 Engine Specs; Type: 4.6L V8: GM RPO Code: L37: Displacement: 4.6L: Valvetrain: Dual-Overhead Camshafts, Four-Valves Per Cylinder, Roller.

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Engine - 4.6L & 5.4L Exploded View 4.6L Engine. Jump to Latest. Supercharged 32v Cobra Engine Diagrams w/Part Numbers Accuracy and Completeness NOT guaranteed in this series - sorry. I'll update as I can! 1. 6F066 - Supercharger Assembly 2. N806154 - Screws (2 req'd). The Northstar V8 VIN Code 9 or Y is a 4.6L engine. The cylinders are arranged in 2 banks of 4 with a 90 degrees 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.

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