Yeah the Victor jr is shorter, another reason I got rid of my RPM that I had on mine.so with the air gap a=b/2 would be 4.2+5.25\2=4.725....which means actually a jr would give more clearance than an airgap rpm intake???if thats true hmmmm something to think about here
A few years ago, 350 jet sprint race boat. A-B dyno test.Did you change from a RPM to a Vic jr?
If so, what engine and wondering what differences you noticed. Not just top end hp, but mid range tq??