Exhaust routing
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Senior User
Joined: Sep 2003
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Exhaust routing
Im trying to figure out a few questions I have about the exhaust system im about to fabricate. I already know this: I have a Flowmaster 3" Big block muffler that i want to use, I want to use all 3" dia. aluminized mandrel bends, and I want single exhaust out the passenger side using a nice merge collector. Questions I have are: best location to put the crossover? Should I let the exhaust exit before the rear tire, or go over the axel and exit after the rear tire?
I want to keep everything nice and tight, tucked away under the truck because while aff road I would hate to smack something. How is my 422" FE motor with a Crower 270 cam, and all the goodies going to sound with my described single exhaust? I have found that a well built single exhaust performs better than dual, even with a x-pipe. I do not care about the sound outside the cab, I would like the interior noise level to be low however. The muffler was givin to me, so thats why im using it. thanks for any tips/expirences
I want to keep everything nice and tight, tucked away under the truck because while aff road I would hate to smack something. How is my 422" FE motor with a Crower 270 cam, and all the goodies going to sound with my described single exhaust? I have found that a well built single exhaust performs better than dual, even with a x-pipe. I do not care about the sound outside the cab, I would like the interior noise level to be low however. The muffler was givin to me, so thats why im using it. thanks for any tips/expirences
Senior User
Joined: Nov 2000
Posts: 366
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From: Calgary
Not sure if this will help, but I drew up my current and future system. Course, mine is 2wd and I removed the rear tank so..
On relatively stock powertrain, you can get away with single exhaust, but you will be missing out on some hp's. I'm not exactly sure how a single would better then dual. And I also recommend running it the full length, with the muffler just after the cab, with the tailpipe jumping over the rear axle, like my first sketch. Obviously, it makes it hard for water to back up into the muffler. And I've heard it's best to have the H-pipe as close to the flanges as possible. Mine will be just past the tranny.
On relatively stock powertrain, you can get away with single exhaust, but you will be missing out on some hp's. I'm not exactly sure how a single would better then dual. And I also recommend running it the full length, with the muffler just after the cab, with the tailpipe jumping over the rear axle, like my first sketch. Obviously, it makes it hard for water to back up into the muffler. And I've heard it's best to have the H-pipe as close to the flanges as possible. Mine will be just past the tranny.
