pi heads ?

[stangboy22]

hey guys my question is how can i tell if my 4.6 engine has pi heads? is there any way that i could find out without take parts off?

 

[squeak93]

Need more info. What year is it, what car is it in, and is it the stock motor.

There are a few ways to tell.

 

[COramprat]

If you have a 98 or earlier look at the intake manifold. If it takes up all of the valley between the heads then you likely have PI heads unless it was just a PI intake swap. The NPI intake you can house a family of cats under it. Otherwise all 99+ Stangs are PI heads.

 

[stangboy22]

the car is a 2000 gt but i just had a third motor installed from a wrecked 03 gt i just wanted to make sure the mechanic didnt shat me because with an off road h with a 75mm throttle body intake plenum with a cai, this thing is suppose to make a mean sound

 

[007]

tthe car is a 2000 gt but i just had a third motor installed from a wrecked 03 gt i just wanted to make sure the mechanic didnt shat me because with an off road h with a 75mm throttle body intake plenum with a cai, this thing is suppose to make a mean sound

Does it have power? What happened to the first 2 motors?!?!?!?!?!

If it came from a 2003 then its PI. The catback (mufflers) have the biggest impact on sound. Does it sound less "mean" than before?

It simply wont sound "mean" with stock mufflers.

 

[stangboy22]

Does it have power? What happened to the first 2 motors?!?!?!?!?!

If it came from a 2003 then its PI. The catback (mufflers) have the biggest impact on sound. Does it sound less "mean" than before?

It simply wont sound "mean" with stock mufflers.

yes really the car sounded mean before. the car has flowmaster 40 series welded in. the first 2 motors took beatings from the strip/street!:Track:

 

[VEE EIGHT]

LOL your mechanic swapped in a V6

 

[squeak93]

Do what was suggested above. If you have to, take a pic of the intake if your not sure. Basically if you can see below it and there is a TON of room, then its a pi intake. Which is a start but no guarantee.