AllDodge

iTrader: (1)

Champion, AC, NGK just like ford, chevy, dodge

Do agree don't run larger gap

TomZ

iTrader: (2)

I thought the Delco marine plugs were no longer available,though looking at their site...I guess they're available again.

I've been using Delco commercial series plugs in mine.

kdshouston

The oil is only on the threads. The tips look okay, no trace of oil. There is one plug that has a little bit of excess carbon build up.
I already have the champion plugs in hand. I also got a new cap rotor and 30 OHM resistance 10 mm wires. I might pick up a hotter coil.
Could I re-gap the plugs to .045 and work with them through the season? Thanks for everyone's input.

AllDodge

iTrader: (1)

First why do you think .045 gap or hotter is needed?
The extra gap without the need for it just causes issues. Your motor was designed and built for a given set of parameters. Changing those parameters causes other issues/concerns. Running a hotter plug or more gap and not changing things like using higher octane fuel or changing timing can destroy your motor.

SB

iTrader: (1)

The factory e-core coil on these 454/502MPI motors are extremely strong and will not die like a My Spark Died coil or etc.

.035-.040 gap.

Will fire a supercharged engine too, no sweat.

worry about something else.