Good spark plug

[94TeaL]

With my mods im going to list, should i be looking for standard? Platinum?
Right now i run a AC delco #1 rapid fire.
Now i do plan on running the bottle later on in the summer, then ill switch to a NGK tr6, but for now for these mods all motor what would be good?
2030 Crane cam
Forged .30 over Ross pistons
20% more flow melling oil pump
block bored .30 over
P&P heads 3 angle valve job
P&P upper and lower intake
All Comp valvetrain parts Hardened Pushrods
1.6 Rockers
5.0 #19 injectors
and some other things.

[JoshMcMadMac]

Run copper plugs. The platinums have given a lot of people a lot of problems, REGARDLESS of their engine setup. They just don't perform well. The copper plugs do fine and are not something you will have to worry about or question.

[OneQuickV6]

TR55 without spray, TR6 for when you do spray:)

[oil pan 4]

I all ways get copper ones.
That cam plus the extra .03''bore you could go 1 heat range colder if you run into any unexplained detonation.

[Tyler]

autolite coppers are my first choice.


second choice for me are the ngk tr55's.


(this is for NA)

[94TeaL]

So tr55's good on 3.4 all motor?
thanks for the advice keep it coming ;)

[viper98885]

I am running the iridium plugs with my nitrous setup. I have basically the same internals that you do plus a little more here and there. I wanted to stay away from the copper plugs and with nitrous, iridium is basically the only other option.

[Richardcoelho]

Re: Good spark plug

platnums suck on my car for some reason.

[Meatyshells]

Re: Good spark plug

TR55 without spray, TR6 for when you do spray:)

what he said

[nascar24jd]

Re: Good spark plug

I use NGK V-Power plugs UR5, which are copper. Very good plugs, no issues.