Intake Problem?

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Davids79

Founding Member

Jun 21, 2002

53

0

0

Issaquah, WA

Aug 25, 2008

#1

• Aug 25, 2008

• #1

I have a 98 GT that has had a miss @ around 1800 RPM, I have put new plugs and wires into it and it still runs like $(%#, if you get above 2k it runs much better, It has also developed a coolent leak around the tstat,

What are the signs of a bad intake? what year did they finally fix it? would a bulitt intake work on a 98 4.6l? My fear is that the new part from the dealer is still plastic and would have the same problem down the road, am I nuts for thinking that?

 

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darkside03gt

Member

Feb 19, 2007

851

8

18

Sacramento CA

Aug 25, 2008

#2

• Aug 25, 2008

• #2

if you have developed a leak you need to replace it because its more then likely cracked. You could step up to a pi manifold. its still plastic but the coolant crossover is aluminum. a bullitt manifold will cost you some seriouse cash and wouldnt be worth it in the long run.

 

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Davids79

Founding Member

Jun 21, 2002

53

0

0

Issaquah, WA

Aug 25, 2008

#3

• Aug 25, 2008

• #3

Will I have any clearance issues with the stock hood, I see that livernois has a kit but don't see what is special about it?

 

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juecke98gt

Banned

May 31, 2008

78

0

0

Aug 25, 2008

#4

• Aug 25, 2008

• #4

The livernois kit is just a pi intake with special adapter plates to fit the npi heads because the coolant passages are just a little off and the air passages are shaped different. Some people just rtv it up but I dont really endorse that method but some swear by it so its all about your pereference. When I did my heads and intake I had the water passages welded to fit the pi intake and than I grinded it down but I work in a toolroom so I have all the tools to do this stuff. Also my heads were ported and polished. O and livernois kit intake has the top milled to fit a stock hood.

 

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Davids79

Founding Member

Jun 21, 2002

53

0

0

Issaquah, WA

Aug 26, 2008

#5

• Aug 26, 2008

• #5

Anyone have any problems with an aftermarket PI intake or should I stick with the FoMoCo, The dealer wants $400, summit wants $200, I saw a couple of recomendations around the forums but the links were all dead.

 

98E9GT

New Member

Dec 16, 2007

110

0

0

Aug 26, 2008

#6

• Aug 26, 2008

• #6

I got a Crown Vic PI w/ Alum Cross on ebay for 89 bucks, working great. Really feel a difference.