Does the firing order go clockwise or counter clock wise on a 305 engine for 1985 Chevy truck?

This firing order is consistent regardless of whether the engine is rotated clockwise or counterclockwise.

Here's why it doesn't matter:

* Firing order is a sequence: The firing order describes the order in which cylinders fire, not the direction of the crankshaft rotation.

* Crankshaft rotation: The crankshaft in a gasoline engine rotates in a specific direction (clockwise or counterclockwise), but the firing order remains the same.

Therefore, the firing order of 1-8-4-3-6-5-7-2 applies to a 1985 Chevy truck 305 engine regardless of its crankshaft rotation direction.