head ?

Reply Subscribe

Thread Tools

Search this Thread

10-31-2009 | 10:11 PM

harley9703

Thread Starter

Senior Member

Joined: Feb 2009

Posts: 390

Likes: 1

head ?

on our trucks. haha

whats the lift/specs and compression ratio on npi heads and pi heads...

also are the cams in the npi heads worth salvageing for any reason.

Reply Like

11-01-2009 | 08:04 PM

F150man21

Senior Member

Joined: Jan 2009

Posts: 637

Likes: 1

From: PC, FL

Quote:

Originally Posted by harley9703

on our trucks. haha

whats the lift/specs and compression ratio on npi heads and pi heads...

also are the cams in the npi heads worth salvageing for any reason.

what year, what engine?

Reply Like

11-08-2009 | 01:04 AM

harley9703

Thread Starter

Senior Member

Joined: Feb 2009

Posts: 390

Likes: 1

4.6 97 npi
4.6 03 pi heads

Reply Like

11-09-2009 | 12:39 PM

minimonster17

Senior Member

Joined: Jan 2007

Posts: 2,144

Likes: 1

From: Spring Hill, FL

the NPI cams aren't of any real value. have you thought about putting some aftermarket cams in your new PI heads? Comp Cams makes some for the 2 valve engines that sound good, and yield excellent torque.

Reply Like