Rocketman said:I just installed BBK Tuned Length Shorty Headers on my 03. Here's an article in 5.0 about the HP gains on a stock 4.6L 2V.
Go here for how to do the install.
http://www.stangfreak.com/content/index.php?option=com_content&task=view&id=52&Itemid=1
I will be doing a dyno on mine the end of this month and will let you know how mine came out. I did a baseline run last month just so I would know one way or the other if shorty's are worth it. IMO, it was worth doing the mod just for the challenge of doing it.
007 said:oops. Sorry. I heard they were good for 40 at the wheels!
worked v6 said:I never understood why LT's produceed more power? Why is that anyway, aren't they pretty much the same? I mean they don't have bigger openings or anything, thy're just longer...right?
NightHawk is correct. In more technical terms, the "longer time" that is allowed when merging toward and within the collector, the better the scavenging effect it has on exhaust gases. Better scavenging actually helps draw exhaust gasses out of the system and also provides some pulse reversion protection itself. In doing this it promotes a broader power band and the ability to produce power and torque at all RPM. It's said that ideally, primary tubes should be at least 27" for best results on a street engine. The rule of thumb seems to be short tube headers for more horsepower up top and long tube headers for more power down low. But recent dyno test (over the last several years) have shown that LT's actually increase horsepower and torque at all levels on your average street motor and not just down low like most think.-=NightHawk=- said:i think it has to do with the longer time the air is able to expand or something like that....midlength vs LT? difference is...?
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