Firing order for 1974 Pontiac Lemans motor?

The firing order for a 1974 Pontiac Lemans depends entirely on the engine it had. Pontiac used several different engines in the Lemans that year. You'll need to specify the engine displacement (e.g., 350, 400, 455 cubic inches) or the engine code (found on a casting on the engine block) to get the correct firing order.