2000 Ford PI heads 4-sale
02-01-2006, 02:24 PM
#1
2000 Ford PI heads 4-sale 2000 PI Mustang heads. " XL3E " PI heads with 74k. Perfect shape. Just make me an offer. Wanted to sell them in South FL, but will ship if you pay for shipping. Thanks.
Quote from " Rebuilding the Ford 4.6 "
The "power improved" (PI) casting (XL3E) with the square intake ports was introduced in 1999. It has bigger intake valves, different springs, and a small, heart-shaped chamber that has a swirl-fin behind the intake valve. These heads don’t have the "restrictor" that’s driven into the head, so the wide cap has the small slot machined in the divider between the two sides.
The "PI" heads weren’t installed on everything in 1999, and the parts books aren’t clear about exactly where they were used, so there’s a lot of confusion about which applications came with or without them.
In fact, no one seems to know anything for sure, except that: 1) all the Mustangs had "PI" heads in 1999; and 2) some of the trucks and Expeditions had them in 1999. Our best guess is that all the Expeditions got them, along with some of the F250 pickups, but they definitely weren’t used on all of the pickups in 1999, so be sure to ask for the casting number before you sell an engine or a head.
Quote from " Rebuilding the Ford 4.6 "
The "power improved" (PI) casting (XL3E) with the square intake ports was introduced in 1999. It has bigger intake valves, different springs, and a small, heart-shaped chamber that has a swirl-fin behind the intake valve. These heads don’t have the "restrictor" that’s driven into the head, so the wide cap has the small slot machined in the divider between the two sides.
The "PI" heads weren’t installed on everything in 1999, and the parts books aren’t clear about exactly where they were used, so there’s a lot of confusion about which applications came with or without them.
In fact, no one seems to know anything for sure, except that: 1) all the Mustangs had "PI" heads in 1999; and 2) some of the trucks and Expeditions had them in 1999. Our best guess is that all the Expeditions got them, along with some of the F250 pickups, but they definitely weren’t used on all of the pickups in 1999, so be sure to ask for the casting number before you sell an engine or a head.
