on my 93 cobra im running ford racing shorty headers, i have a set of bbk longtubes and a short o/r x pipe sitting in the garage, how much of a gain in hp should i expect and would it be worth the hassle of the installation?
longtubes vs shortys
- Thread starter mikes93cobra
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looking at your mods I would say it would be well worth the scrapes, cuts, and sweat your going to get. A 331 with an S trim probably another 10 horse and maybe 10 ft lbs. just guessing here.
Its going to sacrifice the low end torque tho, so yea the car will go faster at the strip but around town driving will be better with the shorties. I vote to stick with the shorties.
The long tubes always have fitment issues and are prone to leaky gaskets.
The long tubes always have fitment issues and are prone to leaky gaskets.
thanks for the replys, i dont hit the strip up too much, all light to light stuff. so i will stick with the shorties
carguy19 said:
I would reconsider installing the longtubes. Maybe on a 4.6L you might lose some seat of the pants torque, but there is nothing but gains to be achieved with longtubes on a five liter. Especially considering you have a blower, the results will only be amplified.
Really, they're not that difficult to install, and BBK is a better fitting header than MAC or others.
They're no more prone to leaks than any other improperly installed set of headers.
With the blower, I would expect anywhere from 20-40rwhp and similiar torque gains.
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I love my longtubes. On the dyno, I think they were worth about 10-12 for me. No leaks to speak of. Our cars aren't known for their low end anyway, and with your mods you won't notice any losses.
I hated my Mac Lt's. One of the pipes went around the steering shaft and rubbed horribly. Went to a Flaming River Rack but it was never right. My 351 will have shorties. They make life easier when you gotta do some work in there!
10-15 rwhp isn't worth the < 1 tenth of a second ET you'll get at the strip, so if it's a street car or mostly street/some strip, IMHO, it's not worth the hassle.
Mark
Mark
fivestangs said:
Thats what Im saying.. not worth it unless its a race car.
Equal length shorties are the way to go.
Not worth it? If you have the parts its like horsepower waiting to be unleashed. I thought we were ALL addicted to speed?fivestangs said:
racerbox77 said:
I agree. Why spend all that money on your set up then not attain its reasonable potential? My car isn't tuned to within an inch of its life, but for a daily driver making 300 at the wheels on pump gas--the headers weren't that hard to install and driving that beast to the muffler shop to hook up my hi-flow catted x-pipe was priceless! The sound when you idle; the sound when you're rollin'; 10th of a second at the strip--who cares? I can gain a tenth by practicing; but 10-15 hp isn't just on top. What about the potential torque gain. What if your exhaust happens to be your bottleneck? All the headwork in the world doesn't matter if you can't get air in--or you can't get it out.
Of course, this is my spin...Oh, did I mention how good longtubes look from the side view? Mine tuck up pretty well, but man: nothing says performance like those 8 tubes lurking beneath those frame rails...
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Long tubes, 2 1/2" off road H-Pipe, Dynomax Super Turbos, 2 1/2" tailpipes. Sounds great when it's time to walk, cruises quiet...Love it.
blown...
blown...
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