99 intake header suggestions?

[knever3]

I have an '87 Comanche 4wd that I have a 4.7L stroker built for it. I cannot for the life of me find difinitive information anywhere on the internet as to which exhaust header fits without mofication to the intake or exhaust.

Have:

4.7L stroker motor with '99 intake and aluminum bored throttle body.

Need!

Info on which header fits, I believe I would need a 2.5" collector so I can run 2.5" exhaust for the stroker. So far I can find headers with a smaller collector size and/or shorty headers. I cannot have my cake and eat it too. I want stainless steel so I don't have to worry about it going bad soon too.

So maybe I cannot have it all but I don't want to order and pay shipping both ways for something that doesn't fit. I called Summit and they didn't have anything that suits my needs.

Any help with experience would be greatly appreciated.

Thanks!!

 

[O-Gauge Steamer]

Gibsons fit... But then most will with a slight bit of massaging.

 

[John(XJ)Jeep]

Most will fit or at least should fit without too much problem. My Clifford header was a little in the way of the #6 runner of my intake so I had to file about a 1/16 off of a corner to get it fit flat properly. If anything you shouldn't have to go further than that for most headers. Castings are usually vary between 3/16 - 1/4 in different places, corners of the runners are usually thicker than the flat sections.

 

[NorCalChris]

What head are you running on your 87? Hopefully not a 2686 if you're using a 99 intake. 7120, 0630 or a 0331?

 

[knever3]

I may have confused some of you, I'm running a '96 head and block in an '87 Comanche renix system. 0630 head

 

[clean4drxj]

I have a 96 and I run the late 99 n intake with an APN header fits fine..

 

[Johnnie Walker]

Banks makes a good one.

 

[JohnX]

Banks makes a good one.

I have one new in a box in the garage. Make offfer.

 

[knever3]

I ended up buying a aFe header, 409 stainless steel 1/2" flange, fits perfectly with the '99 intake.

 

[techno1154]

That look different. A little rough,....unfinished. I like the long runners, it should be good for low end power. I wonder how well it will hold up?

 

[streetxj]

That look different. A little rough,....unfinished. I like the long runners, it should be good for low end power. I wonder how well it will hold up?

Unfortunately, there aren't too many longtube headers for the 4.0 out there. I think Borla ( http://www.carid.com/1993-jeep-cherokee-exhaust-systems/borla-headers-87524.html ) and clifford ( http://www.cliffordperformance.net/...de=CP&Product_Code=57-2015&Category_Code=J258 ) are the only choices for longtubes.

 

[clean4drxj]

How much was that AFE? not that impress with the way they designed it, APN is around 150 bucks give or take and has a slightly better design IMO. Good luck with it!

 

[knever3]

How much was that AFE? not that impress with the way they designed it, APN is around 150 bucks give or take and has a slightly better design IMO. Good luck with it!

$437 I think, I am very impressed with it so that's all that counts in my book, I am happy with my purchase and the company's customer service. I would recommend it to anyone.

 

[O-Gauge Steamer]

That look different. A little rough,....unfinished. I like the long runners, it should be good for low end power. I wonder how well it will hold up?

Those primaries are about the same length as everyone else's as it still has to connect to the factory down pipe. A set of pipes to move the Torque peak down to 2500 rpm would have to be 32" long...

At least that is what my calculator says.