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R Addiction

08-14-2004 11:17 PM

Spark plugs 502 MAG MPI

What type of spark plugs do you use in your 502 MPI? I am replacing the AC Delco Rapidfire#1 that have been in my boat for 150 hours :eek: OE plugs were NGK. They don't look to bad for being in there for that amount of time...

obnoxus

08-14-2004 11:42 PM

Re: Spark plugs 502 MAG MPI

I always ran the Rapid Fire,, had good luck with them.

Steel Outlawed

08-15-2004 07:24 AM

Re: Spark plugs 502 MAG MPI

I also use the AC Delco MR43T whipple charged 502. They work great for me.

Shooter

08-15-2004 12:09 PM

Re: Spark plugs 502 MAG MPI

Try the AC MR43TS - extended tip, same priciple at the rapid fire with half the price. I use them in all of my boat motors. Supercharged 454 and twin 502s.

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