4.6 intake manifold
04-19-2007, 03:28 PM
#1
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Thread Starter
Join Date: Jul 2005
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Posts: 126
4.6 intake manifold
Has annyone put a PI intake manifold on stock 1998 heads?
I understand that the PI intake has to go on 1999 and up Heads.
Any Canadians on the forum who have a stock 1998 updated intake( Aluminum water jacket) Manifold for sale I am interested.
I understand that the PI intake has to go on 1999 and up Heads.
Any Canadians on the forum who have a stock 1998 updated intake( Aluminum water jacket) Manifold for sale I am interested.
04-19-2007, 04:25 PM
#3
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Join Date: Jan 2007
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Posts: 106
RE: 4.6 intake manifold
Here is a link to the throttle body. The one I have is the third one down and it is supposed to fit the 1996-2003 so it should fit his no problem. I ordered it directly from Steeda. Like I said if you get both I will do 250 and I pay for shipping (as long as it is not over $50). Just the intake $100 you pay for shipping. http://www.steeda.com/products/accufab_throttle_bodies.php
04-19-2007, 05:05 PM
#5
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Join Date: May 2006
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Posts: 69
RE: 4.6 intake manifold
I put the Livernois kit on my 96, it comes with billet adapter plates to fit the PI manifold to our non PI cylinder heads. I put the intake manifold on myself and it was pretty simple. I have also read about people on these forums who have put the PI manifold on their non PI motors without any adapter plates, they just used a bit of silicone by the water crossover, and they say they have no problems. The latter is cheaper too.
04-19-2007, 06:29 PM
#6
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Join Date: Apr 2006
Location: Alabama
Posts: 214
RE: 4.6 intake manifold
I put the intake ( $125 ) and new set of PI Cams ($100) on my 98. Cams aren't bad to do once the intake is already off, just take valve covers off is all. Use the PI gaskets and get a 99+ valley pipe as well. Why pay $5000 more for a 99+ GT?? 
04-19-2007, 07:07 PM
#7
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Join Date: Mar 2007
Location: Oklahoma
Posts: 277
RE: 4.6 intake manifold
ORIGINAL: BigTurbo6
I put the intake ( $125 ) and new set of PI Cams ($100) on my 98. Cams aren't bad to do once the intake is already off, just take valve covers off is all. Use the PI gaskets and get a 99+ valley pipe as well. Why pay $5000 more for a 99+ GT??
I put the intake ( $125 ) and new set of PI Cams ($100) on my 98. Cams aren't bad to do once the intake is already off, just take valve covers off is all. Use the PI gaskets and get a 99+ valley pipe as well. Why pay $5000 more for a 99+ GT??
04-19-2007, 07:23 PM
#8
2nd Gear Member
Join Date: Apr 2006
Location: Alabama
Posts: 214
RE: 4.6 intake manifold
It wasnt bad at all. I spent most of my time bending my valley pipe to make it work, and tapping our 2nd water sensor is kinda a bitch to keep from leaking. I donno if it's the best way, but we just removed the cam gears, swapped cams and right back together. WE had to file the front cover just a touch to get the drivers side cam gear back on but it wasnt bad. Car feels very different...to give you an idea i did 0-60 blasts on my gtech prior to these mods. Car would hook up with a 1000k rpm launch with no spin and net a consistant 7.5 seconds every time. Now I cant hook up at all. But even while breaking lose like crazy all the way through 1st I got a 7.3 !! I'm hoping a new set 275/40/17 tires will get me a 6.9. I've seen dynos of stock cars with just cams and intake at 235rwp which is at par with a PI. It did take me both Saturday and sunday to complete, and I shouldve changed the fuel filter as well because the airflow made me ping until the filter was changed.
04-19-2007, 08:17 PM
#9
2nd Gear Member
Join Date: Mar 2007
Location: Oklahoma
Posts: 277
RE: 4.6 intake manifold
ORIGINAL: BigTurbo6
It wasnt bad at all. I spent most of my time bending my valley pipe to make it work, and tapping our 2nd water sensor is kinda a bitch to keep from leaking. I donno if it's the best way, but we just removed the cam gears, swapped cams and right back together. WE had to file the front cover just a touch to get the drivers side cam gear back on but it wasnt bad. Car feels very different...to give you an idea i did 0-60 blasts on my gtech prior to these mods. Car would hook up with a 1000k rpm launch with no spin and net a consistant 7.5 seconds every time. Now I cant hook up at all. But even while breaking lose like crazy all the way through 1st I got a 7.3 !! I'm hoping a new set 275/40/17 tires will get me a 6.9. I've seen dynos of stock cars with just cams and intake at 235rwp which is at par with a PI. It did take me both Saturday and sunday to complete, and I shouldve changed the fuel filter as well because the airflow made me ping until the filter was changed.
It wasnt bad at all. I spent most of my time bending my valley pipe to make it work, and tapping our 2nd water sensor is kinda a bitch to keep from leaking. I donno if it's the best way, but we just removed the cam gears, swapped cams and right back together. WE had to file the front cover just a touch to get the drivers side cam gear back on but it wasnt bad. Car feels very different...to give you an idea i did 0-60 blasts on my gtech prior to these mods. Car would hook up with a 1000k rpm launch with no spin and net a consistant 7.5 seconds every time. Now I cant hook up at all. But even while breaking lose like crazy all the way through 1st I got a 7.3 !! I'm hoping a new set 275/40/17 tires will get me a 6.9. I've seen dynos of stock cars with just cams and intake at 235rwp which is at par with a PI. It did take me both Saturday and sunday to complete, and I shouldve changed the fuel filter as well because the airflow made me ping until the filter was changed.
04-19-2007, 08:27 PM
#10
2nd Gear Member
Join Date: Apr 2006
Location: Alabama
Posts: 214
RE: 4.6 intake manifold
Used the parts for sale/parts wanted forums on here. Those kits are expensive but I bet they work good and give you more peace of mind. I am pretty poor so I try to do as much as i can for as little as possible. Got frpp 4.10's on ebay for $100 and am going to give that install a try as well ( w/ my dad who has quite a bit of racing / mechanical experience ). I'm hoping to get in the 8's in the 1/8th mile for $500 on a NPI auto/vert. No one seems to think I can...we'll see!