Standing in front with the hood open, looking at the distributor, #1 is at the 6 O'clock position, from there clockwise it is 1, 6, 5, 4, 3, 2.
165432 is firing order I believe the #1 is the lower right if you looking from front of truck
The firing order for a 1996 Chevrolet S10 Blazer is 1, 6, 5, 4, 3, 2. The number one cylinder is on the front right as you face the engine.
1-8-6-5-4-3-7-2- firing order is number 1 should point at number 1 cylinder.than go clockwise from there.
http://autorepair.about.com/library/firing_orders/bl-fo-7742.htm
The Chevy Blazer with a 4.3l engine has a firing order of 1-6-5-4-3-2. The number one cylinder is on the driver side closest to the front of the Blazer.
It's different with every car, some are marked, but the best way to find out would be to find a firing order diagram.
http://autorepair.about.com/library/firing_orders/bl-chevrolet-firing-83.htm
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.
You really should get a repair manual for your car. The firing order for 1988 and later 4.3 liter V6 engines is 1-6-5-4-3-2, number one is driver's side front on the distributor and rotation is clockwise. Number one cylinder on the engine is driver's side front, number two is passenger side front and the rest follow the same pattern.
take number 1 spark plug out and bring that piston to top dead center. Then take distributor cap off. Locate which tower the rotor is pointing to on the cap. That will be the number 1 plug wire. Then just follow the firing order. The rotor should turn clockwise.
On most cars the firing order is stamped on the intake manifold. the only thing you will sometimes will find on the distributor cap is the number 1 showing the location of the wire that goes to the number one plug.
Distributor- 4-3-2-1- timing belt 34 12 (looking at distributor firing order)