Greetings fellow Panthers! I figured that I would do a small write up of sorts for the 4.6L motor. This pertains to the intake manifold for a NPI to PI swap.
The sources I used are:
Modular head shop
mustang forums,
badshoe
Because I'm tired of plastic and really, really, really don't like plastic, I found an all aluminum intake manifold.
**Warning!: This is not a direct bolt-on. Some cleaning of parts, flash casting,and a retorque of bolts is required!
It is a Procomp peice, for $260 with shipping, ordered from here:speedmaster




You will need a set of PI intake manifold gaskets. I used a Felpro set. If you have a temp gauge, you will need to get an aftermarket one, or an inline housing like this one.
Also, you'll need a porting bit similar to this one:
You will need to basically knock down the flash casting in the inlet hole and everywhere you can reach. I have also enclosed a picture of areas that I did. I had to extend the wires for the temp sensor for the PCM. I also had to use some of the mounting bolts that came with it (passenger side front and back, and driver's side back bolts) All the other bolts worked well.
I couldn't locate the other pieces for the underneath, so I used to stockers. I did a little grinding on the back plate, turned out rather well. No leaks, got rid of the plastic for good, and possibly a small increase in torque. It does like to scream after 2k rpm for sure; plus plenty of room for upgrades should the need arise.
Like I said, I got this intake because I don't like plastic
Anywho enjoy!
-zoomie
The sources I used are:
Modular head shop
mustang forums,
badshoe
Because I'm tired of plastic and really, really, really don't like plastic, I found an all aluminum intake manifold.
**Warning!: This is not a direct bolt-on. Some cleaning of parts, flash casting,and a retorque of bolts is required!
It is a Procomp peice, for $260 with shipping, ordered from here:speedmaster
You will need a set of PI intake manifold gaskets. I used a Felpro set. If you have a temp gauge, you will need to get an aftermarket one, or an inline housing like this one.
Also, you'll need a porting bit similar to this one:
You will need to basically knock down the flash casting in the inlet hole and everywhere you can reach. I have also enclosed a picture of areas that I did. I had to extend the wires for the temp sensor for the PCM. I also had to use some of the mounting bolts that came with it (passenger side front and back, and driver's side back bolts) All the other bolts worked well.
I couldn't locate the other pieces for the underneath, so I used to stockers. I did a little grinding on the back plate, turned out rather well. No leaks, got rid of the plastic for good, and possibly a small increase in torque. It does like to scream after 2k rpm for sure; plus plenty of room for upgrades should the need arise.
Like I said, I got this intake because I don't like plastic

Anywho enjoy!
-zoomie
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