Drivers side, first spark plug in front is #1
the fireing order for a Chevy 305 is 18436572 with #1 being the drivers side plug closest to the radiator.
driver side front
The firing order for a 1994 Chevy 1500 Silverado 305 from the distributor cap to the spark plug is 1-8-4-3-6-5-7-2. To locate the number one plug, look for where the wires plug into the small square on the driver's side, two pegs clockwise from that square is the #1 spark plug.
Front driver side.
The number 1 cylinder on the Chevy 305 is the front cylinder on the drivers side. The drivers side is odd numbers, the passenger side is even.
1-8-4-3-6-5-7-2
take out the # 1 spark plug turn the motor to top dead center remove the dist. cap and where ever the rotor is pointing is # 1
305/350? 1,8,4,3,6,5,7,2 in a clockwise direction. # 1 is driver side front plug
Drivers side, front plug.
The #1 spark plug is the furthest forward on the driver's side. Follow that spark plug wire back to the cap and it would be the one you seek. Most of the time it's the tower closest to the #1 plug, but that's not as important as getting the firing order correct.
18436572 to locate #1 see the square where the wires plug in (drivers side) from that square come clockwise to you 2 pegs this is #1
This is a guess because of lack of year, engine size & model 305/350? 1,8,4,3,6,5,7,2 is the firing order in a clockwise direction. # 1 is driver side front plug its a Chevy v6, 4.3