Exhaust
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Junior User
Joined: Mar 2011
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Exhaust
i have a 1978ford f150 400 with headers looking to do the exhaust new..what the best route to go to get that mean sound im looking for. and is having a H pipe put in will that help with the sound im looking for. thanks
Fleet Owner
Joined: Dec 2009
Posts: 20,678
Likes: 83
From: NorCal
Too open ended of a question.. much to choose from like tubing size, mufflers, and where it terminates.
Here's my rig: 390FE, Hedmans, 2.5-inch mandrel bent tubing through Moroso Spiral Flows, and terminating at a NASCAR-style boom tube exhaust tip in front of the right rear tire.
<embed width="440" height="420" type="application/x-shockwave-flash" src="http://v5.tinypic.com/player.swf?file=34gpukh&s=5">
Here's my rig: 390FE, Hedmans, 2.5-inch mandrel bent tubing through Moroso Spiral Flows, and terminating at a NASCAR-style boom tube exhaust tip in front of the right rear tire.
<embed width="440" height="420" type="application/x-shockwave-flash" src="http://v5.tinypic.com/player.swf?file=34gpukh&s=5">
Fleet Owner
Joined: Dec 2009
Posts: 20,678
Likes: 83
From: NorCal
True. These rigs aren't high revvers. In principle, 3-inch tubing from the collectors into a dual inlet muffler with 2.5-inch single outlet is acceptable. Same with 2.5-inch tubes into dual inlet muffler with a single 2.25-inch outlet.
But hey, dual exhaust is much cooler and gives the rig street cred...
But hey, dual exhaust is much cooler and gives the rig street cred...
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,246
Likes: 5,812
From: S/W Missouri, Polk county
Is your truck 2wd or 4wd? If they are chassis exit (inside the frame) you have to contend with the trans crossmember first, your collectors are probably 4" to 6" or less from it right?
Dvrs side come over by the pass side pipe, and both down the r/h side of the xfer case (above the crossmember), then split one over to the other side.
Turn out in front of the rear tire, saves bends and pipe which ='s money saved. I hear Flow Master 40's are nice, but they are a little $.
Dvrs side come over by the pass side pipe, and both down the r/h side of the xfer case (above the crossmember), then split one over to the other side.
Turn out in front of the rear tire, saves bends and pipe which ='s money saved. I hear Flow Master 40's are nice, but they are a little $.
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Junior User
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Truck is 4x4. I have 2 1/4 pipe and 2 1/4 purple hornies. And i want it to exit out the rear of truck
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Moderator & parts slinger
Joined: Feb 2007
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From: S/W Missouri, Polk county
Run some true duel pipe above the crossmember then put the H pipe aft of that to equal the sound out (so I hear) and keep going towards the back, you want it straight out the back or turned out behind the rear tires?
If you have the side fuel tank both pipes will have to go down the passenger side, also have it start to turn out once above the axle so it will not be hanging under your gas tank.
That can clearance issues and makes for a PITA to drop the tank.....
Purple Hornies ought to sound nice?
If you have the side fuel tank both pipes will have to go down the passenger side, also have it start to turn out once above the axle so it will not be hanging under your gas tank.
That can clearance issues and makes for a PITA to drop the tank.....
Purple Hornies ought to sound nice?
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,246
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From: S/W Missouri, Polk county
Yes I agree with the the muffler shop said on placement of the H pipe, dought there is room at the collerctors due to the crossmember? Just get the pips past it and then H pipe it then put them PH's on there.