Where on the distributor cap does number 1 spark plug wire go a 350 Chevy?

On a typical small-block Chevy 350, the number 1 spark plug wire goes to the rotor terminal that is closest to the number 1 cylinder. However, the distributor cap itself doesn't have numbered terminals. The number 1 location is determined by the position of the rotor inside the distributor cap when the engine is at top dead center (TDC) on the number 1 cylinder compression stroke.

To find it definitively, you need to:

1. Find the number 1 cylinder: This is usually marked on the engine block or can be determined by the engine's firing order (consult your engine's specifications). A common firing order is 1-8-4-3-6-5-7-2.

2. Locate TDC for cylinder 1: Use a timing light or a degree wheel to find the exact TDC for cylinder 1.

3. With the engine at TDC for cylinder 1 compression stroke: Observe which rotor terminal is facing the distributor cap opening. That's where the number 1 spark plug wire connects.

Without physically checking the engine, it's impossible to say with certainty which terminal is number 1. Always double check your work using a reliable source like your vehicle's repair manual or a trusted mechanic. Getting this wrong can cause serious engine damage.