500Hardtop
Well-Known Member
Not a new subject, but I wanted to swap a Mopar dual plane (RPM) to a single plane M1, and did some measuring to see if it would fit under the stock hood.
It would fit with a drop base K&N base and 3 inch filter, but nothing but a paper carb gasket , no insulator 1/4 inch gasket like I had on the dual plane.
I put the intakes on a mock up 440, with no gaskets. The M1 measured 5 inches, the Mopar dual plane measured almost 4 3/4, the Holley street dominator measured 4 inches, and a edelbrock street master measured 3 1/8.
This is what I came up with. I went with the street dominator.
I also swapped to a Hughes Engines valley pan.
Hope this helps?
It would fit with a drop base K&N base and 3 inch filter, but nothing but a paper carb gasket , no insulator 1/4 inch gasket like I had on the dual plane.
I put the intakes on a mock up 440, with no gaskets. The M1 measured 5 inches, the Mopar dual plane measured almost 4 3/4, the Holley street dominator measured 4 inches, and a edelbrock street master measured 3 1/8.
This is what I came up with. I went with the street dominator.
I also swapped to a Hughes Engines valley pan.
Hope this helps?