Exhaust Opinions??

[Green Machine 92]

Well i have a 92 GMC with a 350. Right now i am running Longtube Heddman headers going to true dual 2 1/4 inch straight pipe out the back to 3 1/2 inch tips. (no cats) I put a new cam in and the motor needs more back pressureso i need some mufflers. I have some mufflers in mind i just need some opinions. I am considering dual Thrush welded, flowmaster super 10s or cherrybomb extremes, and a dual in dual out flowmaster super 40. I just need some opinons on which one to choose.

 

[95C1500]

The FM Super 40s are too loud IMO. Youtue is not known for giving exhaust sound clips justice and the ones I've seen on youtube are very loud. Might be your taste but not mine.

 

[1997chevydriver]

The FM Super 40s are too loud IMO. Youtue is not known for giving exhaust sound clips justice and the ones I've seen on youtube are very loud. Might be your taste but not mine.

You do realize he is running no cats or muffs right now right? I don't think loud is a factor for him

 

[95C1500]

Oh yeah i read that just didn't consider it when I posted haha...

 

[bow61509]

I had a flowmaster super 40 di/do with gutted cats on my black truck it was loud but not overwhelmingly loud

Sent from my 6.0 powered android

 

[am92]

Why do you think the motor needs backpressure? If its running differently it needs a tune, not mufflers. But I'd go with thrush for sounds or something straight-through like magnaflow or borla for performance

 

[GMCTRUCKS]

Do it.

 

[Green Machine 92]

Well i went with the thrush welded

 

[Silverick]

Why do you think the motor needs backpressure? If its running differently it needs a tune, not mufflers. But I'd go with thrush for sounds or something straight-through like magnaflow or borla for performance

Back pressure helps with low end torque and is actually a good thing in some situations.

A buddy of mine has a blown BBC in his boat that dyno'd at just over 900hp. We put it in the boat and it ran awesome without any baffles in the pipes.....

We put the baffles in one weekend for the noise restrictions on a certain water venue..... and it ran better!!!

It's always nice to tell a story with pictures!! lol

 

[am92]

That's a freaking sweet boat, and while it may have ran better, it wasn't from the back pressure. The baffles may have changed the tuning of the pressure waves to help with scavenging and that is why it ran better. For anyone that's more interested in the science behind exhaust systems, there is a great article here http://www.superchevy.com/technical/engines_drivetrain/exhaust/0505phr_exh/viewall.html that explains everything very well