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Old 11-11-2008, 07:52 AM   #1
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LT's vs Shorty

i was looking at some LT's but heard they were hard to instal. so i was wondering are they and if they are is it just easier to buy shorty's and install those
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Old 11-11-2008, 08:17 AM   #2
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Re: LT's vs Shorty

Check this link http://www.mustangevolution.com/forum/t25082/

Longtube headers make the most HP, especially on a naturally aspirated motor. First you have to understand why headers make HP. First off, both shorties and longtubes are designed to provide smooth passageways which the exhaust gases can flow through. They have gentle curves and smooth shapes which provides as little restriction as possible to the exhaust. This is an improvement over cast iron manifolds, which have a rough finish from the casting process, and which usually have tight turns with little regard to smooth flow

this applies only to Longtubes--the diameter and length of the primaries (the tube between the exhaust port and the header collector) are carefully chosen to match the operating RPM range of the engine. Also, all the tubes are made to the same length The idea is that the exhaust gas pulse from one cylinder can be timed (with the correct length of primary) to help the exhaust gas out of another cylinder later in the firing order. This is called scavenging. Scavenging gets rid of the exhaust gas from the cylinder faster, which in turn brings in a fuller, denser, intake charge.

Shorty headers don't scavenge becasue the primaries are too short and are usually not equal length. All shorties can do is smooth out the flow a little bit compared to stock. LT headers do this AND they scavenge. That's why shorties are worth between 3-5 HP, and longtubes can get 15-20 RWHP depending on other mods
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Old 11-11-2008, 03:28 PM   #3
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Re: LT's vs Shorty

either way, swapping them on a 4.6 gt is not an easy task. u have 2 choices, lift the engine at least 6 inches high or drop the k member. i rather drop the k member because its not too bad and you will have easy access to the manifolds. considering the work, id go big or go home and get the long tubes.
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Old 11-12-2008, 06:52 PM   #4
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Re: LT's vs Shorty

I did my long tubes without dropping the tranny, it's tight but can be done! Go with the longtubes, either are going to be a PITA to install so get the most bang for your buck!
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Old 11-12-2008, 07:04 PM   #5
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Re: LT's vs Shorty

^^^ Or do bassani mid lengths :pnoid:
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Old 11-12-2008, 07:30 PM   #6
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Re: LT's vs Shorty

lol, gonna install those sooner than later?
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Old 11-12-2008, 08:25 PM   #7
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Re: LT's vs Shorty

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Originally Posted by modular2valve View Post
lol, gonna install those sooner than later?
I think once I can get them cleaned and coated...if jet-hot would get back to me...or the place in lafayette would answer their damn phone...I could see about getting it done soon.
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Old 11-12-2008, 08:59 PM   #8
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Re: LT's vs Shorty

i know after u install them, we know what car we will be taking everytime we roll out somewhere lol.
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Old 11-12-2008, 09:00 PM   #9
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Re: LT's vs Shorty

Of which, we're taking it this weekend to Chips place...
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Old 11-12-2008, 09:04 PM   #10
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Re: LT's vs Shorty

oh i know

did u let him know we were coming out there saturday?
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Old 11-12-2008, 09:11 PM   #11
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Re: LT's vs Shorty

Yeah. He said he'll have the strippers standing by.
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Old 11-12-2008, 10:41 PM   #12
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Re: LT's vs Shorty

strippers??? this might be an all weekend thing to check this car out. we might actually look at the sn95 i was picking up. apparently it has a clear title and might just fix that one up.
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