On consideration regarding M-1 dual plane intakes.
I had one on my 360 Magnum for awhile and it ran okay, but it has a hot water carb heat provision that could not be good for all-out performance.
It undoubtedly enhances driveability is cold weather, but probably kills some horsepower in warm weather, if you're interested in going fast. I'm sure that water passage under the carb could be plugged at the front, if you're resourceful and don't want the carb heat.
There was a thred on here a while back about the flow number comparison between the Crosswind manifold and the Edelbrock Air Gap, but I lost track of the thred and never got to see the numbers IF any were ever posted in a side-by-side comparison.
I wonder if that information is available anywhere?
Thanks for any info...
Bill in Conway, Arkansas