/6 Exhaust: Dual or single? Your thoughts

RustyRatRod said
Lets examine the slant six (or any American six's firing order) for that matter related to exhaust pulses and scavenging.

1-5-3-6-2-4 is the firing order for every American made inline six........unless some of the new ones are different.

This means that a slant with a 6 into 2 header is perfect for scavenging.

Why? Lets split the front three cylinders and the rear three.

Keep in mind, the firing order, 1-5-3-6-2-4.

See what's going on here? The firing order alternates between the front three and rear three every time a cylinder fires. This means with every firing of a cylinder, exhaust will be scavenged from the opposite cylinder on "the other three".

So, your "theory" is not optimal. This is why a good 6 into two header and into one large exhaust pipe works best here and duals do not.

Thank you for the understanding of the 6 cylinder...lets move on to 3rd grade math. 3+3=2...Anyone gets this? Without forced induction a straight six could get better performance than a V8. The straight six cycles exhaust better than the V. This is an advantage. A V8 will only be quieter when both banks are separate and both with a muffler, no V or X pipes from both banks splitting into mufflers will be quieter. It's rather simple science. You can find this in Chrysler nomenclature from at least 1972.