I used the Q-jet on a high compression 350 once and it delivered 22 to 23 MPG, I imagine you want the secondaries to come in early on a boat motor.
I hope your project gets to moving along Aussie.
Nice score on the set of heads.. Your on your way to building a second engine..
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1996 -19' NV Flats 115 Mercury 4-stroke
1983 -20' Wellcraft Center Console 250 XS
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