...between the M1 4150 and M1 4500???


Have read that a M1-4150 flows better then the 4500, but still no power comparisons.

If you have room...many think the m1 4150 with a dominator adapter is the way to go.

Alrighty, thanks for the info guys. Have the option to use either one. This is going on a 451 with a Dominator carb, so wanted to know what our best bet would be.

I am running a stage 6 m1 4150 with the adaptor and have been looking for a m1 4500 to get rid of the spacer but am I really better off with the spacer? I might have to go to a bigger scoop since I cant fit a air cleaner on it now with the 4" hemi scoop.

Can you test both of them before making a decision? From a simple flow perspective, the 4500 version is better (based on my testing years ago). However, the 4150 + adapter / spacer combination may (repeat MAY) still work better. But there's only one way to know...

I cant test. My 4150 intake is ported and also had some angle milling on the flanges so it would be a job to buy the 4500 and have all the work done to it to try it out.