Long tubes on my vortec

[chevyman("]

Hey guys I've been searchin I know what's out there but I'm just wondering what you guys think about 2.5 inch off the collectors y piped into a 3 inch to a single in dual out 40 series will that work for my 350 and sounds good and be beneficial with my long tubes

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[96Z71ECSB]

A "Y" pipe after the headers kind of defeats the purpose doesn't it?
Run 2.5" duals all the way back. An "H" or "X" pipe would help.

 

[chevyman("]

So just run 2.5 duals all the way out?

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[RyanR]

No no no.... 2.5" back into a single 3" is perfectly fine... hell its what I've always ran. The main goal in exhaust is high flow, with just enough back pressure and both sides of the exhaust/engine being balanced...hince why people run a y pipe into a single pipe or add an x or h pipe while running duels... you don't want one side of the engine to flow smoother than the other, running a y into a single with make a scavenging effect and balance out the weaker side as will a x or h... for the money and performance gains, I've always preferred a y pipe into a single... even on my old 700 rwhp Lightning.

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[chevyman("]

that's what I've always thought thanks you! Lol in gobna run 2.5 into 3 with a custom y pipe

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