how to tell if my cars got pi heads or just the up graded intake

[98kris]

i have a 98 gt when i bought the car the guy said it had a pi swap but how can i tell it has the newer intake with the metal coloent cross over instead of the plstic one that cracks all the time i bilt a 98 that had a a pi motor in it but i dont know how to tell the heads apart to see what i got i want to up grade to a better intake but i know the none pi intake and the pi intake is diff acording to sumit the in take fits 99 to 04 so how can i tell witch heads i have

 

[joshjwc9]

I am pretty sure the easy way is the front-most runner on a PI intake is the driver whereas on the NPI it is the passenger.

I think. Someone may have the side by side identification, but my reasoning is the lazy man's reference.

 

[98kris]

thanks will have to check it out intakes are crazy money for the 4.6 dont want to buy one and have it not fit my fox **** was all eze and cheap

 

[sn95jones]

I would like to know as well because my GT is quick for a Mustang thats only suppose to have 215rwhp.
I've beaten a turbocharged 300zx before by about 5 car lengths and was still pulling on him.
I've also done 135mph in 4th not if that really matters but 135mph in 4th in a 215rwhp sounds pretty damn good to me.

 

[bhuff30]

As stated, the intake is a PI intake if the front runner heads to the drivers side. As for the heads, your best bet is to find the serial number. The other option is to pull the intake off and take a look at the shape of the intake port, the Pi is slightly different from the npi.

 

[Green&GoldGT]

I'd look to see if it has adapter plates between the manifold and heads. If it does then you have NPI heads, if not PI heads.

 

[bhuff30]

If it has adapter plates, then the car definitely has NPI heads... but you can easily bolt on a PI intake without using the adapters.

 

[GDawg]

What side is the oil fill tube on? Passenger side definitely PI heads. Driver's side could be either. Can't remember what year it changed...

PI intake only, first runner is opposite NPI.

PI and NPI can both have the aluminum coolant crossover.