lloydchristmas

Could be. I know I gained about 25 HP with the shortie shifter.

devins

I just ordered a set of Denso Iridium plugs for my 5.0. Everything I've read says they are the best. No gapping required. Just put them in. $12 bucks a piece hurts but running something from a meteorite in your engine is pretty cool. We'll see how they work.

jeep45238

While the iridium material itself has no claimed performance benefit, its incredible strength and high melting point (even higher than platinum) allows much smaller electrode design than what would be possible with conventional materials. This smaller electrode creates a more concentrated electric field that reduces the voltage requirement. On some performance motors, this can translate into easier starts and quicker acceleration.

spike306

i usually go with the ngk v's, and i belive that the gap is .035 or .037

gusbustamantejr

I run NGK on everything I own. They are great plugs. I have Taylor 409 wires and NGK cut back plugs in my Vette. They help idle, tuning, and gas mileage. They also help maintain spark at high RPM over 5K, but they do not add any SOTP or power.



I would not change them until your wires are worn and in need of repair. You cant go wrong with NGK.

fermin

I Work and study plugs because I am a parts man, I also own a 5.0 And I run always, Motorcafts because you system is made to run with that plug. And if you want more boost, run the Platinum type Motorcraft. Never run Bosch Platinum plugs not in a FORD. Or esle it will run like sh*t. I know because I have to refund money every day because of that brand in Ford's.

stang574

The Motorcraft's are a great plug for the price. I have had great results with them on a regular basis and under nitrous use. However the NGK's are proven to be a slight bit better in the HP department (like 1 to 2 hp's). Also, as the iridiums are the plug to put in if you can justify spending the $12 per plug for the increase in starting, high r's, and small gains in hp.