Standing in front with the hood open, looking at the distributor, number one would be at the 5:30 position on the cap, from there clockwise it goes 1, 6, 5, 4, 3, 2. I am assuming this is a 4.3L engine.
i am looking for a diagram of the firing order in a 1997 Chevy s10 blazer 4x4.
Call your local parts store and they will be happy to give you the answer.
165432 is firing order I believe the #1 is the lower right if you looking from front of truck
1-6-5-4-3-2 clockwise on the distributor.
18436572
Firing Order: 165432 Distributor rotation: Clockwise 1993 Chevy 4.3L V6 Firing order
165432
165432
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firing order pick up s10 2001
For a 1991 Chevrolet Blazer with 5.0L, 5.7L and 7.4L engines the firing order is 1-8-4-3-6-5-7-2 The distributor rotation is clockwise. Here's a web page with a wiring diagram: http://www.chuckschevytruckpages.com/underhoodwiring.html