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Old 11-19-2012, 07:42 PM
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For a single 4 barrel hi performaance carb on a hi perf 350 the 750cfm holley is the best choice
99% of the time. It is every bit as responsive as a 650 if not more and aways makes more power
and torque.

If you want to actually make your boat go faster get a tunnel ram and two 650's or it.
The edelbrock street tunnel ram is a good choice. Now you will gain some MPH on the water.

This chart illustrates the power gain from a single 4bbl to a tunnel ram w 2 650's.
This 355sbc is similar to yours

while the power test starts at 4500rpm the tunnel ram will out power any single 4 bbl manifold typically from as low as 2500-2800 rpm. You will have more mid range power.

Last edited by F-BIRD'88; 11-19-2012 at 08:00 PM.
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