What is the firing order on a 1985 Olds Cutlass Supreme V8?

The 1985 Oldsmobile Cutlass Supreme V8, depending on the specific engine (they used a few different V8s that year), will likely have one of these firing orders:

* Most common: 1-8-4-3-6-5-7-2 (This is for many of the Buick/Oldsmobile/Pontiac V8s of that era)

However, there's no single definitive answer without knowing the *exact* engine code. To be certain, you should:

1. Check the engine block: The firing order is often stamped directly onto the engine block itself.

2. Consult your owner's manual: If you have the original owner's manual, it will specify the firing order for your particular engine.

3. Look up the engine code: Find the engine code (usually a combination of letters and numbers) on a sticker under the hood or in the engine compartment. Use this code to search online for a specific firing order for that engine.

Without knowing the exact engine code, 1-8-4-3-6-5-7-2 is the most probable, but double-checking is crucial to avoid damaging your engine.