4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

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Old Sep 5, 2008 | 09:36 PM
  #1  
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2003gtstang
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Is it worth buying bbk long tube headers. how much hp will i get. Also how much would the instalation cost. I heard its alot of work if you do it yourself.
Old Sep 5, 2008 | 09:46 PM
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Yes, the longtubes sound better and give you more power, but your going to have to change your midpipe. The shorties will give you more power and sound then stock, so if not the LTs then upgrade to shorties.

You should be able to keep your o/r x pipe for shorties.
Old Sep 5, 2008 | 10:40 PM
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how much would installation of headers cost i got an 01 and was thinking either bbk shortys or long tube not sure which but was wondering what cost would be to install
Old Sep 5, 2008 | 11:02 PM
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if you can go LT's. In heinsight i should have waited and bought long tubes and a shorty h and call it a day. I'm sure installation is a pretty penny considering it might be hard to get to the bolts that connect your headers. They may even be lock-tite. I know i had to put a torch on my bolts that were holding my stock midpipe on to get them loose.
Old Sep 6, 2008 | 06:20 AM
  #5  
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If price is not an issue then I would say get the long tubes and a matching mid pipe...either way you're gonna have to drop the k-member to install it so you might as well get the long tubes...performance specialties does installs for less than $400 so thats not a bad deal...
Old Sep 6, 2008 | 07:43 AM
  #6  
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+1 on lt's. And you no DONT have to drop the k member. By the time you get all the suspension crap off and everything else just to drop it you could have both headers off trust me i just got done doing my headers. I didnt even use a lift. Just some extensions and swivels. Im not gonna lie its a pita but i feel it made a big difference for me. If i took the time to drop the k member it would have taken twice as long. If you have the extra money than just take it to a shop cause it is a pita but i didn't find it worthwhile to drop the k member i could get all of the studs just fine.
Old Sep 6, 2008 | 07:53 AM
  #7  
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u definitely dont have to drop the kmember. you just have to undo the motor mount bolt and but a wood block under the oil pan and tilt the engine over. you are going to have to disconnect the steering shaft (easy) and the the starter (also easy.)yes you are going to need some long extensions with a swivel joint too. i would also recommend a ratchet wrench to get some of the bolts, helped out a lot. as for the stock h-pipe, if you dont plan on saving it, just cut it off if you have problems with the bolt, about 60 seconds with a saw-zell. good luck.
Old Sep 6, 2008 | 09:47 AM
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Originally Posted by pcs
u definitely dont have to drop the kmember. you just have to undo the motor mount bolt and but a wood block under the oil pan and tilt the engine over. you are going to have to disconnect the steering shaft (easy) and the the starter (also easy.)yes you are going to need some long extensions with a swivel joint too. i would also recommend a ratchet wrench to get some of the bolts, helped out a lot. as for the stock h-pipe, if you dont plan on saving it, just cut it off if you have problems with the bolt, about 60 seconds with a saw-zell. good luck.
+1 Its not that hard guys, you dont need to drop the K member.
Old Sep 6, 2008 | 12:52 PM
  #9  
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I is just a PITA to get all of the bolts in, I actually did mine w/o dropping the K-member (YAY tubular).

Definitely worth it though, several week later I went to a Dyno day and there was a another Mustang there, he didn't have L/T's but he did have an o/r x-pipe and a cat back and a plenum (things I don't have). and I still dynoed 20rwhp higher than him.
Old Sep 6, 2008 | 01:15 PM
  #10  
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it weird how some people will get 10wrhp and others get 20rwhp..hope i dont get screwed when it happens lol



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