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#1 |
Registered User
Join Date: Dec 2006
Location: winter haven, fl
Posts: 56
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My current exhaust has long tub headers to flowmasters then out the back. It's a new and clean set up that came on the truck. I don't have a cross over H or X pipe configuration on the exhaust. I know there's horsepower there if I put one on. Can I just use the same size exhaust piping and weld in my own H pipe configuration? Do I need to do this at a certain distance from the headers? Or do you think this is just a crazy idea?
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#2 |
Registered User
![]() Join Date: Nov 2006
Location: Pahrump, NV
Posts: 1,079
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Re: exhaust question
From my understanding it's all guessing and dyno time. Also depends on youre motor setup, probably to much work with not enough end results to worry about it.
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#3 |
In Memoriam...
Join Date: Nov 2006
Location: Wallburg, NC
Posts: 1,216
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Re: exhaust question
ttt...
I'm interested in this too. Exhaust configurations are not my most knowledgeable area (haven't figured out yet what area is though...). Can we get additional input to this question?
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'68 C10 SWB 307ci 2BBL FarmTruk Pics Here "You know, doing what is right is easy. The problem is knowing what is right." |
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#4 |
Senior Member
Join Date: Jul 2004
Location: Clarks Hill, Indiana
Posts: 733
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Re: exhaust question
FWIW
The only "h" pipes i've seen were directly after the headers. I've only seen 1 actual "X" pipe set-up. It was for high RPM performance & a couple feet back from the end of the headers.
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1969 K10 - V8, 465, 205, 12 bolt, D44 2002-current 1969 K20 - V8, 465, 221, Eaton, D44 2012-current Nothin' but drums on all 4 corners! past horses in the stable 72 C10-short step (97-02), 68 C10-long fleet (06-12) |
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#5 |
Account Suspended
Join Date: Sep 2005
Location: Monroe, WA
Posts: 3,815
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Re: exhaust question
H- and X- pipes don't add significant HP unless the engine is pretty warm. They do calm the engine note down quite a bit as they cut the resonance frequency of the exhaust by 1/2.
I'd give it a miss unless you're looking to make a quieter exhaust. http://www.drgas.com/articles/art_paulhaney.php |
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#6 |
Born Psycho
![]() Join Date: Feb 2001
Location: brentwood,cal,usa
Posts: 4,884
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Re: exhaust question
the true way to figure out where the H pipe belongs is to spray paint a line down the side of each exhaust pipe, take the truck out and run it pretty hard, lift it up and look for the "hot spot" in the paint-thats where the H should be but in the real world that usually ends up in a crappy spot, like under the transmission. X pipes work on the "scavenger effect" which is better than the H pipe according to dyno tests.
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jerry moss 72 cheyenne super K20- tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,tow hooks,bumper guards,toolbox,aux. fuel tank,posi front and rear,plus other goodies!!! SOLD 69 suburban K20-tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,4 inch all spring lift,4 speed, 14 bolt full floater, dana 44 HD,warn winch,posi front and rear,tow hooks,plus other goodies. 73/80 chevy/gmc K20 SB400,turbo 400,205,tilt,a-c,gas hog. 77 K/5 cheyenne blazer-daily driver/beater. SON HAS IT NOW BRENTWOOD,CALIFORNIA |
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#7 |
The Hammer Man
![]() Join Date: Oct 2006
Location: Wilmington, NC
Posts: 864
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Re: exhaust question
any pics of any ones set-up with the X pipe?
__________________
Boise69. Bought in Boise ID and its a '69 ___________________________________________ 1969 Chevy C-10 SWB 350/400 - drivable project www.americanhammer.com 2013 MBZ Sprinter customized 2005 MBZ Sprinter Van 2004 Land Rover Discovery 2001 Yamaha Road Star 1997 MBZ E420 1989 Ferrari Mondial T |
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#8 |
In Memoriam...
Join Date: Nov 2006
Location: Wallburg, NC
Posts: 1,216
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Re: exhaust question
Not a truck, but kinda see the "X" pipe...
![]() BTW...Billa, that's a great link. http://www.drgas.com/articles/art_paulhaney.php I remember watching qualifying on TV for the 1995 Daytona 500 and, Yes, the Morgan-McClure cars sounded MEAN. The pitch was sooo different than all the other team's cars. Higher pitch. Of course this was at WOT. Guess most all the Cup teams caught onto thier little secret so enough, and they all sound the same again.
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'68 C10 SWB 307ci 2BBL FarmTruk Pics Here "You know, doing what is right is easy. The problem is knowing what is right." Last edited by FarmTruk; 01-08-2007 at 01:12 AM. |
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