All V8 Chevrolet's are 1,8,4,3,6,5,7,2 with 1,3,5,7 on the left bank and 2,4,6,8 on the right with the distributor rotating clockwise.
What is spark plug's position? tell me.
YES, The 350 Vortec does. It is in the back top side of the engine. All the plug wires go to it.
The firing order is 18436572.
18436572
What engine? V8? 18436572 for chevy 1991 silverado v8 350 diagram
We have no way to show any diagrams or pictures. Sorry.
The wires are different - HEI ignition wires won't work in a standard distributor - they all go in the same relative places though.
back of the engine under that black box that says vortec it has 9 spark plug type wires comming off it
1-8-4-3-6-5-7-2
Distributor panel?? If you mean distributor cap, you first move the air intake going to the throttle body. Mark all spark plugs wires with the correct plug and unplug each one at the spark plug. Next you will find 2 screws holding the distributor cap. Remove both screws and and lift off the cap and wires while the wires are still connected to the cap. Take the spark plug wires off and place them onto the new cap in the same position you removed them. Put new cap on and tighten the screws and replace the wires to the correct spark plug. You should replace the wires and rotor button when you do this also.
Reuse your old 305 distributor.
8