Straight pipe or Muffler?
Thread Starter
|
Freshman User
Joined: Jan 2006
Posts: 25
Likes: 0
Straight pipe or Muffler?
I have an 86 F-150 with a stock 300I6. I used to have a muffler on it but it fell off in a snow drift. I have nothing behind the catalitic converter. I like the way that it sounds but the exhaust is getting in the cab when I idle. I was going to put on straight pipe that dumped out in front of the rear tire. I was just wondering if my engine would have enough back pressure? It may be a dumb question but I dont want to wreck my engine. Any help would be great!
Lead Driver
Joined: Jun 2005
Posts: 8,458
Likes: 722
From: Calgary Canada
If you don't mind the loud sound, go for it. If you have the original cats, you may want to remove them, or just empty them out, that can remove some backpressure and free things up a little.
You probably want to do something pretty soon, since exhaust fumes in the cab is serious.
You probably want to do something pretty soon, since exhaust fumes in the cab is serious.
Tuned
Joined: Apr 2001
Posts: 307
Likes: 1
From: Phoenix since 4/05
I have a 5.8 in mine with no muffler just cats. I did it by accident at 1st but it's such a nice mellow tone I left it that way. I have a 3" exhaust running out the passenger side in front of the rear wheel.
I'm no kid (56-1/2) and don't particularly like loud exhaust but this sounds really nice.
JohnF
I'm no kid (56-1/2) and don't particularly like loud exhaust but this sounds really nice.
JohnF
Tuned
Joined: Apr 2001
Posts: 307
Likes: 1
From: Phoenix since 4/05
Originally Posted by seventyseven250
Darned oldsters and thier loud exhausts! 
JohnF
Trending Topics
Thread Starter
|
Freshman User
Joined: Jan 2006
Posts: 25
Likes: 0
no muffler just cats. I did it by accident at 1st but it's such a nice mellow tone I left it that way. I have a 3" exhaust running out the passenger side in front of the rear wheel.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Senior User
Joined: Jun 2003
Posts: 390
Likes: 0
From: Rose City, MI
i have seen alot of these older fords with no converters 3 inch pipe and a good chamberd muffler that sound mean. if you go to a chambered mufller mount it back near the axle and you wont get the fumes in the cab nearly at all unless the wind is blowing that direction. not running a turn down or tail pipe also makes it louder more like a race car. I have 3 different trucks all 3 with different exhaust systems. I would suggest goin to a exhaust shop tell them the sound you are looking for and most likely they can tell you the way to get it. by the way the bigger the diameter of the pipe the deeper the tone is, the shorter the pipe is after the muffler determins how loud the exhaust is.
Junior User
Joined: May 2006
Posts: 57
Likes: 0
From: portland,or
personally i think i sounds like crap with no muffler,but whatever works for you is good.If it was me i would get a cheap Magnaflow or buy a real muffler FLOWMASTER 40 series and trust me youll love the sound of it!