Notices

4.6L repair issues

Thread Tools
 
Search this Thread
 
Old Feb 24, 2004 | 01:40 PM
  #16  
JustinH's Avatar
JustinH
Senior User
Joined: Jun 2003
Posts: 335
Likes: 0
Originally posted by LxMan1
Any Mod motor 99up has the PI (Performance Improved) heads on them.
I believe that like said, the true duals on the Stang helps along with different PCM tuning for different powerbands. The stang is made to run at higher rpms where the heavy Exby is set up to have more low end torque. The camshafts are identical in the car and truck.
The Stang also had a different intake manifold.
Jimmy
The mustang got the pi heads in 99, the other models followed in following years.

JH
 
Reply
Old Feb 24, 2004 | 04:57 PM
  #17  
CPerry's Avatar
CPerry
Senior User
Joined: Jun 2003
Posts: 434
Likes: 0
From: Hawaii
My 1999 F150 has the PI heads. It even has PI stamped on them.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
cccullen
1997 - 2006 Expedition & Navigator
7
Jul 16, 2009 06:58 PM
kailor
1997 - 2006 Expedition & Navigator
3
May 29, 2007 11:32 AM
DallasCobra
1997 - 2006 Expedition & Navigator
1
Sep 7, 2003 09:01 PM
440 wagon
Modular V8 (4.6L, 5.4L)
1
Aug 2, 2002 06:47 AM




All times are GMT -5. The time now is 06:10 PM.

story-0
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-1
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-2
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-3
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-4
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-5
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-6
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-7
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-8
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-9
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE