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Discussion Starter #1
Does anyone know the diffrence in the Pi engine and a Npi engine other than the heads and intake manifold?
 

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!FACEPLATED!
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pistons in a PI have more of a dish than NPI engines
 

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Rollin' 18/ pushin' 2
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8,333 Posts
The first runner towards the front of the car on the intake. If it goes left it's npi if it goes right it's p.i. Alot of people swap over the intake and not the heads/cams though so you will need to look at the casting numbers on the heads to check them. they are located just under the exhaust manifold and the driver's side is usually the easiest to see.
 
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