Performance Spark Plugs

02camarokiller · May 5, 2005

Does anyone run performance plugs? If so, what brand? Are they an easy install?

bdcardinal · May 5, 2005

i personally run Autolite 764 coppers, they are just the copper versions of the motorcrafts that were stock(Motorcraft plugs are made by Autolite). NGK makes good plugs, the Denso Iridiums are good plugs as well. stay away from the Bosch plugs, they have a poor track record with the 4.6 motors.

ShakeandBake · May 5, 2005

i personally run Autolite 764 coppers

Same here, after doing much research on this - I found that the stock or Autolite plugs are all we need, and that performance gains with a more expensive plug haven't been proven.

bdcardinal · May 5, 2005

unless you have a blower or are running a lot of spray, there isnt a need for an exotic plug.

Back2Mustangs · May 5, 2005

Autolites = teh win

bdcardinal said:
unless you have a blower or are running a lot of spray, there isnt a need for an exotic plug.

Bingo. Don't go spending $8 a plug for something you do not need. The Denso plugs have been proven to keep good spark under high boost. The Bosch quad-platinums are a very hot plug and are really intended for cars burning a little oil... Autolite plugs = teh win. Even in LT1 and LS1's on the Dyno, Autolite plugs show a higher horsepower gain than any other plug. NGK's are good plugs, but Autolites are easier to find, cheaper to buy and perform just as well if not better.

Kilgore Trout · May 5, 2005

Motorcraft AGSF-32C at the Ford Parts counter... Or Autolite 764s at AutoZone. Yep yep...

john_324 · May 6, 2005

Kilgore Trout said:
Motorcraft AGSF-32C at the Ford Parts counter... Or Autolite 764s at AutoZone. Yep yep...

Are those the copper ones, same heat range as the stock platinums?

Darkhorse845 · May 6, 2005

I would go with Motorcraft platinums or Autolite 764's.
Whatever you get don't get the bosch plugs because
they are horrible for the 4.6L engine.

Kronos · May 6, 2005

Darkhorse845 said:
I would go with Motorcraft platinums or Autolite 764's.
Whatever you get don't get the bosch plugs because
they are horrible for the 4.6L engine.

Don't just say they are bad for the 4.6 explain why

Firemanz · May 6, 2005

Running NGK TR-6's with my set-up........no problems and my local Napa stocks them...

Kilgore Trout · May 6, 2005

Kronos said:
Don't just say they are bad for the 4.6 explain why

I am not sure about the exact technical reason for "Bosch platinums + 4.6 = teh suck" but so many knowledgable people have said it that it must be true. I know I wold never use them. Plus they are too stinking expensive...

John324 said:
Are those the copper ones, same heat range as the stock platinums?

Yes 32 is the stock heat range and the C on the end means copper.

www.bullittarchive.com has great info on reading, changing, and selecting plugs. Whoever made that site is a Mustang GOD.

white99gt · May 6, 2005

Kronos said:
Don't just say they are bad for the 4.6 explain why

Bosch plugs are junk.
Ive seen NEW plugs blow out of the metal thread casings,misfire new,electrodes come off (new plugs).

Ive seen these plugs in use in many cars ,they are JUNK!!!.

For a N/a Car like the others said.Autolite 764's( i ran these plugs -greeat plug).Or the motorcraft copper versions.
Plat plugs are just longer life plugs and have no performance value at all.

Performance Spark Plugs

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