tripsevn7

i had denso's in both gts and was impressed with them.. one thing that surprised me was my toyota tacoma came with denso's and a denso ignition....

bmorrisj

where do you get denso plugs from for less that $13/ea... holy crap

what about NGK iridiums?

vfast

let's see I have over 550hp on tap and I use autolites...be more worried about a good set of plug wires not those sorry *** FMS one's 60.00 for plug*LOL*

86HOGT

Dude, I had some platinum Boches on mine, and they sucked. I stuck some Motorcrafts in, and for the price of Autolites maybe less, it ran better. Why? Because INTERNALLY the motor is stock. The only way you're going to make power out of spark plug is by indexing all of them. Oh, and look what vfast had to say. I know you're not trying to make beef here but if the original poster, chachi, has bolt-ons, but yet an internally stock motor, than how can you go wrong with Motorcrafts?

bmorrisj

MSD 8.5MM supers here

pfft...80 bucks for some plugs....

mdvaldosta

Hehe no beef lol. I always used Autolite on my other 5.0's - I really honestly think anythings better than Motorcraft stuff - thats just my opinion - although I'm pretty sure Autolite makes the Motorcraft plugs for Ford. And just because vfast uses stock type replacement plugs doesn't mean thats the best their is - Im sure he uses them because their cheap and he probably replaces his plugs often anyways.

Most likely your not gonna "feel" any difference between any brand or type new plug anyways, probably all your gonna tell the difference in is how long they last. I can certainly tell you though, the better plug you run as your hp climbs, the more difference the plug makes. If I wasn't performance oriented I'd probably use motorcraft too.

86HOGT

Money better spent somewhere else IMO.

86HOGT

Heh. We posted sat the same time. Well, I just see it as that's what they put in at the factory and usually last a long time.

mustang86cars

Just replaced my plugs with autolites. Cant go wrong!

mdvaldosta

well I just threw in a set of NGK's (regular copper ones). I had a little skip at idle with the ac off, all gone now. Lol, 50k miles on them though so I guess those stock motorcraft platinums arent that bad eh? I do expect better performance from a copper plug though - just not as much life.