Quote:



http://dodgeforum.com/forum/2nd-gen-ram/145873-kegger-intake-mod-diy.html





I have long wondered if instead of cutting off some of the length of the stock beer barrel
A hole could be added part way down the runner instead.

The air would then decide
Which inlet to enter.

Don't laugh about
"the air deciding which path to take"
Because Ford engineers found that actually happened
And they eliminated an internal runner flap valve
That had been designed into their original intake manifold design.

The Magnum V8 total runner length
which combines
manifold runner
plus length of the cylinder head intake port up to the backside of the intake valve
is said by Long time Chrysler engineer
Willem Weertman
to be 18 inches,
And appears to resonate in the 3400 to 3600 rpm range
Which makes sense
If you look at the 1992 Magnum 5.2 rpms of max torque and max horsepower.

http://www.amazon.com/Chrysler-Engines-1922-1998-Willem-Weertman/dp/0768016428

I quote the
18 inches by Weertman
Because it is hard to know how to measure it yourself
... Do you measure
the top, middle or bottom
of the quite rectangular runner passage as it makes its arching path?

A Magnum being set up for acceleration
Needs resonation in the 4600 to 5000 rpm range
With header lengths to match.

The towing duty iron V10 had 25 inhes which allowed resonation at 1700 rpm.

My fuzzy memory is original 5.7 Hemi was
27 inches
but I dont know the current 2013 dual path lengths.