Single vs dual exhaust
Champion
Joined: Jul 2008
Posts: 3,430
Likes: 2
From: NW Arkansas
Grand Champion
Joined: Apr 2010
Posts: 5,011
Likes: 6
From: Meeker, CO
It's all well and good to impress other pickup owners, but if you want to go really fast you're futzing around with the wrong chassis to begin with. There's nothing a pickup can possibly do that a single exhaust can't handle.
Sez me, but I've been known to be wrong from time to time.
Captain
Joined: May 2010
Posts: 569
Likes: 0
From: clayton, north carolina
i heard that the exhaust pulses don't have to fight each other so u get better low end torque but i could be wrong.i have the stock single exhaust on my truck because i don't 250-300 for exhaust for my truck
Administrator
Joined: Apr 2010
Posts: 87,380
Likes: 4,210
From: Clayton MI
)In all reality, a well designed single exhaust will be just as effective as a well designed dual exhaust on our trucks. Size your pipe for the purpose intended, and everything will be fine.
Veteran
Joined: Jan 2007
Posts: 304
Likes: 0
From: NE, Ohio
Other than looks is there a big difference? For quite a while now I've wanted to have a dual exhaust, but instead of having it exit out behind each rear tire as mine does now I've wanted to have it exit out in front of each tire. I realized this wont work or at least I don't think it will since the gas tank appears to be in the way on the drivers side. Yet I could do a single exhaust out of the passenger side in front of the rear wheel. The reason I'm considering doing this is the day before my transmission died my exhaust hanger right before the tip on the drivers side broke off and broke a chunk of the pipe out with it. I was hoping I could just get that short piece of pipe replaced, but I'm sure the shop will probably want to redo that whole side from the muffler back. I really like how it looks now, but I'm wondering if it's the time to try out the setup I've wanted for a while with it in front of the tires. Right now I have 2.25" pipes. If I go single exhaust I'd go with a single 3" pipe. I'd also have the change my muffler from my si/do to a si/so. Since I don't have true duals and only a si/do muffler is there any performance difference between a single and dual exhaust? Or is it just looks? Any preference on the looks of either setup? I'm also considering going to a Flowmaster 10 series if I do this instead of the 40 series I have now. I'm undecided on if I want it that loud though.
I'm also tempted to just weld it back up where it broke as since the piece it ripped out of the pipe about the size of a half dollar is still attached to the hanger. I think I could weld it back decently enough. I can't decide if that's what I want to do or if I want to do it right.
I'm also tempted to just weld it back up where it broke as since the piece it ripped out of the pipe about the size of a half dollar is still attached to the hanger. I think I could weld it back decently enough. I can't decide if that's what I want to do or if I want to do it right.
Be sure you have chosen an appropriate muffler because some mufflers actually restrict more than release hp. Dyno max from Walker exhaust systems list there mufflers in cubic feet per minute of flow. David Vizard, suggests 2.2cfm per horsepower required for optimum exhaust flow. This was mentioned in one of his books pertaining to Chevy SBs, but airflow is airflow and I believe this can be used universally with any engine.
Flowmasters kind of have a mixed view from how I see it. Some say they are bad some say they are good. Its really more or less who has proven hp production from just an addition of Flowmasters or any other company out there. Good luck!
Veteran
Joined: Jan 2007
Posts: 304
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From: NE, Ohio
One thing about headers, the primary lengths are not as highly as important as the collector lengths, It does help to have the primaries equal length but the collectro is of more concern from what I have read. I have not researched extensively into the exhaust flow, pressures, pressure waves etc so I can not say anything concrete about it.