What plug in gt40p heads

I am trying to get my mustang running. It has a 94 5.0 with fuel injection, & gt40p heads. It has a misfire intermintly at idel & on acceleration. I suspect I have the wrong plugs in it. could some of you 40p users tell me what plugs you are using. It is a stock short block & driven on the street only. 56chevyguy

I would grab some plugs for a 96 Explorer 5.0. Thats where the heads came from. If the plugs are your problem.

Autolite 24's are what you want. Check/clean your MAF as well, it's the #1 reason for drivability issues in 94-95 models.

plugs for a 98+ Explorer/Mountaineer V8 or for a Cobra/Lightning equipped with iron GT-40 heads!! Forget about the shorty plugs (Accel p/n P526S). I've heard they're close to $10 each for this application! Plug specs are: 14mm thread, 0.708" projection, tapered seat, resistor plug. Thanks to Derek Hyde for the Accel plug specs!!. The 2000 FRPP catalog lists a Motorcraft AWSF-32C. I bought Champion Truck Plugs p/n 4013 (I used the Truck Plugs on a '97 V8 Dakota I had and was happy with them. Thought I'd try 'em again.)

taken from

StangPro.com - Ford's GT-40P Cylinder Head

let us know how it goes :O

Originally Posted by 67fastback

plugs for a 98+ Explorer/Mountaineer V8 or for a Cobra/Lightning equipped with iron GT-40 heads!! Forget about the shorty plugs (Accel p/n P526S). I've heard they're close to $10 each for this application! Plug specs are: 14mm thread, 0.708" projection, tapered seat, resistor plug. Thanks to Derek Hyde for the Accel plug specs!!. The 2000 FRPP catalog lists a Motorcraft AWSF-32C. I bought Champion Truck Plugs p/n 4013 (I used the Truck Plugs on a '97 V8 Dakota I had and was happy with them. Thought I'd try 'em again.)

taken from

StangPro.com - Ford's GT-40P Cylinder Head

I checked what my buddies using today and he is using that exact plug. Its the listed number for the Explorer engine.