Combo was a 23'6" Seebold. A 330 HP merc, 400 some hours, stock bottom end, factory cam. The only change to the motor was pocket ported Edelbrock oval port heads. Put heads in the 290 CFM range on my flow bench I think it was at .500 lift. The boat already had an RPM on it and I had a Torker II from a jet boat engine. The Air gap was purchased by me after all the great things stated about it.
I ran all three intakes each manifold was run with three different size out of the box holley carbs.
The Torker won hands down it was like hitting a 75HP NOS shot compaired to the other two intakes. The bow didnt rise out of the hole it jumped. The Air gap and RPM showed no differance in power between each other.
Later some dyno work on another engine revield the air gap and RPM to be very equal in performance the RPM pulled 5 HP less than the Air gap at one RPM point the RPM pulled a flater curve and won the HP total power.
I think what I did was a good non biased test.
I ran all three intakes each manifold was run with three different size out of the box holley carbs.
The Torker won hands down it was like hitting a 75HP NOS shot compaired to the other two intakes. The bow didnt rise out of the hole it jumped. The Air gap and RPM showed no differance in power between each other.
Later some dyno work on another engine revield the air gap and RPM to be very equal in performance the RPM pulled 5 HP less than the Air gap at one RPM point the RPM pulled a flater curve and won the HP total power.
I think what I did was a good non biased test.