CK5
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Mufflers
- Thread starter blzrgb
- Start date
chicken joe
1/2 ton status
4xcrazy
3/4 ton status
I never understood the concept of an X or H pipe in the exhaust, I get the whole equalization thing for sound, but if you use a large enough pipe, you don't get a raspy sound when throttled up hard.
The whole connecting of the two pipes, in my opinion, just turn your true dual exhaust, into a large quantity of material single exhaust.
I have ran a few vehicles with true duals without the crossover setup, never had any sound problems or power problems with them. Also like it better as I could diagnose any issues with the engine based on exhaust side easier.
Another of my opinions, is if you think you need a crossover system on an exhaust, just run a large diameter pipe off the manifolds, back to a large single in, dual out muffler, still get your dual tips for looks and balanced side to side sound, but much less material under the truck.
The whole connecting of the two pipes, in my opinion, just turn your true dual exhaust, into a large quantity of material single exhaust.
I have ran a few vehicles with true duals without the crossover setup, never had any sound problems or power problems with them. Also like it better as I could diagnose any issues with the engine based on exhaust side easier.
Another of my opinions, is if you think you need a crossover system on an exhaust, just run a large diameter pipe off the manifolds, back to a large single in, dual out muffler, still get your dual tips for looks and balanced side to side sound, but much less material under the truck.
Or if you can fit it, a front y-pipe to a single in/dual out muffler.
Also, there are dual in/dual out mufflers, but two 2.5" pipes from the motor to a single 3" is plenty for most applications, and would be a lot cleaner to run. Plenty of dual-outlet mufflers if you have to go that route. IMO the less tubing used, the better, it just adds junk to go wrong or get in the way, especially on the K5.
You don't hear nearly as much about H or X pipes as you used to, perhaps I'm just not exposed to it, but I wonder if it has anything to do with the increased use of 3" tubing negating the need.
Also, there are dual in/dual out mufflers, but two 2.5" pipes from the motor to a single 3" is plenty for most applications, and would be a lot cleaner to run. Plenty of dual-outlet mufflers if you have to go that route. IMO the less tubing used, the better, it just adds junk to go wrong or get in the way, especially on the K5.
You don't hear nearly as much about H or X pipes as you used to, perhaps I'm just not exposed to it, but I wonder if it has anything to do with the increased use of 3" tubing negating the need.
Another of my opinions, is if you think you need a crossover system on an exhaust, just run a large diameter pipe off the manifolds, back to a large single in, dual out muffler, still get your dual tips for looks and balanced side to side sound, but much less material under the truck.[/quote]
Good idea.
Good idea.
Based on my (rough) calculations, 2.25" pipes would be enough on your above average small block (per bank, at the head), and that's not correcting for volume reduction based on exhaust cooling.
3" out of a catalytic converter on a 350 is almost perfect (thus no surprise that is what they ended up with from the factory), if it is lighting correctly, and if a converter is a factor in your case.
3" out of a catalytic converter on a 350 is almost perfect (thus no surprise that is what they ended up with from the factory), if it is lighting correctly, and if a converter is a factor in your case.
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chicken joe
1/2 ton status
He lost me at back pressure. Utter trash, no wonder the back pressure myth persists. 
No idea why you'd want an X-pipe, my suspicion is that a Y is probably more effective if designed right. It is exactly what is done with tri-y's and even regular headers to a less-extreme extent.
No idea why you'd want an X-pipe, my suspicion is that a Y is probably more effective if designed right. It is exactly what is done with tri-y's and even regular headers to a less-extreme extent.
Chevy305 was running an h pipe before. Not sure anymore 
But he said it really made the tone a lot better.
But he said it really made the tone a lot better.
Truckin13
Registered Member
Gibson makes a great muffler, I had their cat back system on my silverado and loved it, never hear it in the cab unless you hit it hard, a lot of the cab noise will depend on where you route the tail pipe, best place to keep the noise down if you are running a single pipe is behind the passenger back tire, that keeps it at the furthers point from the drivers ears. If you want a quite ride just dynomat the floor.
y5mgisi
1 ton status
Subscribed. At some point before too awfully long I'm going to re do the exhaust on the 78 and keep flip flopping on what I wanna do.
I had LOUD Flowmasters until I couldn't take the noise any longer. I looked around and went with the Thrush Hush Super Turbo mufflers, and I am completely happy with them. I know Thrush is the "Shur-Fine" version-low budget brand. However, there are tons of great reviews on them, so that says a lot about them. I've noticed that over time they do get a little louder (I guess the "hush" insulation gets mashed down or something). Anyhow, they are super cheap at about $30-$45 per muffler depending who you buy them from and the specs of the muffler.
chicken joe
1/2 ton status
im a big fan of the hush thrush. i like the classic sound i get from my turbo welded
