what are pi heads and cams?

[vinniepearl]

so I've been searching around and I can't find the answer im looking for. what exactly are pi heads? all I found was performance improvement heads. im guessing npi are non performance improvement? what are the differences? that alsso goes for pi cams. what's the difference?

 

[Hoseitdown]

npi came factory on the 96-98 gts, and the pi heads and all came on the 99-04 gts.

npi guys change their heads, cams and intakes, cause the pi ones make MO POWA!

 

[Willis_98GT]

+1 for mo powa

 

[vinniepearl]

gotcha, thanks for the reply.

 

[97GT4.6]

gotta love mo powa.

Yeah, and then you can get pi heads port and polished, and run a big cam in those heads and your set.