spark plugs

[Alxsmt]

can i only get ac delco platinums for my 3400?? do i want platinums? i was gonnna go out and buy a bunch of plugs to index them but im not gonna bother at 7 bucks a piece!

[IsaacHayes]

You can use any AC Delco 3100/3400 plug ever offered. I run the old plain ones in mine. You can do plain, plat, or iridiums.

See here:

http://60degreev6.com/forum/showthread.php?p=328559#post328559

I run the cheapie plain R44LTSM6

[Alxsmt]

oh nice! so with one you wont get any more "power" than another? just wear?

[19Cutlass94]

You wont really get any more power with any different plug, its more about change interval.

[3100 MPFI]

For me, I stick with either the cheap delco's or if I am feeling frivolous, then I will get RAPIDFIRES. Platinums don't seem to last long for me.

[Alxsmt]

ok thx guys

arnt rapid fires like 20 a piece? and ive heard ur not sposed to gap them, is that correct?

[IsaacHayes]

I'd go plain, or the latest GM iridiums as they have been used for a long stretch and not changed by a new part number, so GM must be pretty happy with them.

On platinum and iridium coated tip ones, you can gap them, but you can't do it by prying on them as it will scratch the coating off. You have to grab and pull it apart to make the gap bigger instead of putting something between the two and prying.

[3100 MPFI]

RAPIDFIRES are normally $4.99 each. I have always gapped them. I don't trust the PRE-GAPPED spark plugs. Those things get thrown around while being shipped, and I have yet to get a full set that were all gapped the same.

Lets put it this way. I just put 6 new plugs in my 3.4 DOHC. Of the 6, five of them I had to adjust, and 1 was fine.

[Alxsmt]

ok, im with ya on that, i have never had any plugs gaped correctly outa the box.

4.99 doesnt seem too bad, are these dealer only plugs? and what is soo good about them?

[3100 MPFI]

you know, I never really looked into what makes the rapidfires so special. I know they would last longer than any other plug in my 3100 MPFI (high compression engine).

No, they are not dealer only. I get them at O'Reilly auto parts.

[merlot566jka]

i use ngk tr55's. mainly cause i foul out the plugs every few weeks and these are $13 a set

[bkaab]

I am just running the cheap AC Delco's under 2 bucks a piece.

[Ortie666]

I am just running the cheap AC Delco's under 2 bucks a piece.

lol, funny thing is those are the olny ones that can hang with nitrous without melting electrodes

[Rhedalert]

you know, I never really looked into what makes the rapidfires so special. I know they would last longer than any other plug in my 3100 MPFI (high compression engine).

No, they are not dealer only. I get them at O'Reilly auto parts.

Does Schmucks have them too>>

[Alxsmt]

ACDelco RAPIDFIREŽ Performance Platinum Spark Plug
ACDelco's RAPIDFIRE Performance Platinum Spark Plugs offer longer life and improved efficiency over time as compared to conventional spark plugs.

Available for most vehicle makes and models, and several marine applications, the RAPIDFIRE Platinum Spark Plug design features:

Ribless insulator that may improve the plug-to-boot seal
Tapered center wire electrode with a platinum pad that reduces the firing diameter and helps improve the firing efficiency by concentrating and directing energy needed to fire the plug with less voltage
One-piece integral suppressor seal that helps reduce radio frequency interference, meters spark plug energy to help provide long electrode life, and seals against compression leakage
When compared to conventional spark plugs:
Reduced sparking voltage
Greater corrosion protection
Fits engines that run conventional plugs, as well as newer vehicles that require platinum plugs
Includes several marine applications
Three-year limited warranty*


that was from AC delco's website. napa has them for 50 cents more than stardard plugs. i think i may just get them. if i do i will post the part number for reference