I`m looking for the best aftermarket spark plugs for my truck 97 f-150 4.6L splitfires or something along that line, in platinum ..What is out there and what is the best? Please someone HELP on this . E-mail me on this. TSJC2442@AOL.COM THANKS!!!!!!
I would suggest using the Bosch Platinum +4 spark plugs; they are $2 a plug cheaper than the factory plug, and they're automatically indexed in the cylinder head due to their design. We're using them in all our vehicles, getting better power and gas mileage.
Performance Products, Inc.
National Distributor of Superchips
According to the owners manual you don't HAVE to change them for 100,000 miles.
Then again we don't HAVE to do any other mods to our trucks either.
Consumer reports gave bad review on the 4 prong plugs.
Tells you how much they know about truck performance.
99 XLT 5.4l reg cab
4 wheel disc/ABS
5 star larait style wheels
Toreador red 2tone
Eclipse 5340 cd player
Memphis ARCS50 component speakers (excellent sound)
subwoofer coming soon
More mods as funds become avalible.
[This message has been edited by 54regcab (edited 08-28-1999).]
Did u know that the bosch +4`s ars a single platinum plug ? Splitfires platinum 3`s are triple platinum,& the factory ones are double platinum. So I`m going with splitfire platinum 3`s. What do ya`ll think ?
Indyfan- "triple platinum" means that all three electrodes of the Splitfire plug are platinum plated [or tipped]. Older plug styles only have two electrodes so platinum plugs in that style can be either "single" or "double" depending on how many of the electrodes are platinum.
From what I understand, the Bosch +4 seems like a good design. Someone correct me if I'm wrong, but it seems like I remember reading that platinum plugs aren't the best performance plugs. They do, however, last a long time. So, with a platinum center electrode (for longevity) and 4 non-platinum electrodes (for performance), it looks like Bosch may have something good.
There have been reports, however, of poor performance in older (pre '97) engines when using platinum plugs. For those applications, I just use "regular" plugs.
------------------ 1997 4x4 Expedition- 4.6L, true dual exhaust w/glass-packs, K&N air filter, SuperChip, airbox mods, Edelbrock shocks, 285/75R16 BFG ATs, Optima "T-Bone" wheels, and Clarion In-dash CD player.
Cut the left (driver's) side pipe where it comes across the vehicle. Then cut the pipe where it exits the second cat on the right side. Remove the Y and everything behind it. Then replace with separate pipes welded to where the originals were removed. Both glass-packs fit where original muffler was located and both pipes exit behind right rear wheel. No "H" pipe.
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