73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Performance => Topic started by: kodalee on December 16, 2013, 08:34:52 pm
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i have a 85 k10 trying to figure out if i should use a x pipe h pipe or neither.
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Easiest will be to just run duals. If you want a X or a H pipe a H pipe would be doable. A X pipe would be pretty hard to get in because of the transfer case.
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H-pipe is easy, X-pipe is hard because of space issues under there in a K. H-pipe helps torque down low, X-pipe helps horsepower, so H-pipe is better for a truck anyway.
The H-pipe does not have to be as big as the main pipes. 2" H-pipe on 2.25" exhaust system is what I have, with Flowmaster 40s.
(http://users.rcn.com/weyand/smalls/imag0315small.jpg)
(http://users.rcn.com/weyand/smalls/imag0314small.jpg)
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Here is a great article for you to read, will give you understanding on both type of systems.
http://www.carcraft.com/techarticles/exhaust_system_installation/
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like this part but it might bring up an old argument lol
"Finally, we swapped on the stepped X-pipe setup and were impressed to see power levels equal to the open headers: 335 hp at 6,300 hp and 302 lb-ft at 5,200. That’s a gain of 12 rear-wheel horsepower, although it turns out we weren’t really giving anything up or gaining anything extra from the open headers. So the car’s happy, and our ears are even happier!"
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Not going to weigh in on which I think is best but I will add that the closer you mount the crossover to the collectors the better your exhaust will perform and more power out put. Most of our trucks had a "y" pipe that went either from driver to passenger or vice versa before the tranny cross member. So at least you know that there's room to do the "H" pipe where it will be most effective if it is what you chose.