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Unread 11-20-2010   #1 (permalink)
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Default Long tube headers vs. short tube headers

Good evening. I am undecided on what exhaust to go with. I am very shortly adding GT40P and ported explorer intake. I will be using the stock cam with 1.7 ratio rockers. The heads have 1.94 intake and 1.48 exhaust. Heads were machined with 3 angle valve job. I am stuck between MAC longtubes with matching h-pipe or Ford P shorty headers and Pypes X-pipe. Would I be leaving much horsepower if I go with the shortys? Thanks.
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Unread 11-20-2010   #2 (permalink)
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Go with the longtubes. They will be a pain to install, and probably more expensive, but worth it. Muscle Mustangs & Fast Fords did an article comparing shorty's to longtubes and the result was that the shorty's weren't even worth putting on
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Unread 11-20-2010   #3 (permalink)
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Shorties usually net around 5rwhp. The long tubes will produce alot more. Usually i'll put the car on jack stands, use an engine brace and drop the front suspension and then drop the engine about an inch. Then it's not that bad.
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Unread 11-21-2010   #4 (permalink)
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i was thinking if I went with the long tubes to install them in the car when I had the heads off. Anyone ever tried it this way?
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Unread 11-21-2010   #5 (permalink)
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doing it that way will give you a little extra clearance,but then its a PITA to get the heads on witht he headers there

the passenger side should drop right in..drivers side you'll have to remove the steering shaft(3 bolts) and jack the motor up 2 inches

i run Mac longtubes with my P heads..worth the extra effort...
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Unread 11-21-2010   #6 (permalink)
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Being that you are in California LT's maybe a problem......
 
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Unread 11-21-2010   #7 (permalink)
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Also longtubes are not going to really make a difference unless you are running a high hp #. The post about longtubes make a huge difference is crap.
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Unread 11-21-2010   #8 (permalink)
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So do you think the shortys would be better? My car is a daily driver and will stay a daily driver. I plan on staying with the stock cam and MAYBE upgrade to a TFS1 or something mild like that. So is my best bet the shortys?
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Unread 11-22-2010   #9 (permalink)
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Quote:
Originally Posted by spdjnky_42 View Post
Also longtubes are not going to really make a difference unless you are running a high hp #. The post about longtubes make a huge difference is crap.
i agree that the difference will be compounded if more power is made, and of course less of a difference with less power, but huge difference is subjective and can mean different things to different people. i personally think even 5 extra hp difference between two bolt ons is a significant difference. long tubes provide a better delta giving the exhaust pulses more time to become uniform before merging helping velocity regardless of the perception of what a huge difference is. do you disagree with this?
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Unread 11-22-2010   #10 (permalink)
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Being that you are in California LT's maybe a problem......
+1
They are illegal here in CA.
 
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Unread 11-22-2010   #11 (permalink)
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So I think short tube headers at my horsepower level would be best.
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Unread 11-22-2010   #12 (permalink)
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Quote:
Originally Posted by wesessiah View Post
i agree that the difference will be compounded if more power is made, and of course less of a difference with less power, but huge difference is subjective and can mean different things to different people. i personally think even 5 extra hp difference between two bolt ons is a significant difference. long tubes provide a better delta giving the exhaust pulses more time to become uniform before merging helping velocity regardless of the perception of what a huge difference is. do you disagree with this?

I do not diagree with that. But the difference between long, equal length and unequal shortie headers is not going to be 5 hp on a mild modded 5.0. And we are also talking about a CA car here. The right size exhaust and a good x pipe can do almost the same on this build especially.
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Unread 11-22-2010   #13 (permalink)
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I got a sweet deal on some Ford Shorty P headers. Ceramic coated for $200. Used but in great shape. Any recommendations on what mid-pipe to use?
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Unread 11-22-2010   #14 (permalink)
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Quote:
Originally Posted by spdjnky_42 View Post
I do not diagree with that. But the difference between long, equal length and unequal shortie headers is not going to be 5 hp on a mild modded 5.0. And we are also talking about a CA car here. The right size exhaust and a good x pipe can do almost the same on this build especially.
guess you're right, doesn't do any good to discuss it here anyway since it is california.

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I got a sweet deal on some Ford Shorty P headers. Ceramic coated for $200. Used but in great shape. Any recommendations on what mid-pipe to use?
i always liked bassani for x-pipes. as far as x vs h... i see new data about every week on which is better so i'll leave that for someone else to tackle and have people come out of the woodwork at them... but if you're using the stock cats, the sound difference between the two won't be significant, but with test pipes/hi-flow (or long tubes) the x-pipe sounds more aggressive imo, but can be a little raspier, and the h-pipe is more of a mellow tone (don't take that to mean quiet.)
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Unread 11-22-2010   #15 (permalink)
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I use an X pipe to help do the same as the long tubes on equalizing pressure. The H is a better sound
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