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Which Intake? Victor Jr or Super Victor
Hmmm, I ´ve run them all in my Futura: Performer, Performer Rpm, Rpm AirGap, Stealth, Vic Jr and this season a Super Victor will be tried. I´ve had both 351 and 393 displacement engines with these intakes.
For good overall performance go with the AirGap.It will provide you with all the power, esp with nitrous, what a street 351 engine needs.Just remember that a dual plane needs a bigger carb than a single plane. For example, the " standard" intake for the 393 in the Futura is a Vic Jr.Last summer I tried the Airgap.It provided some more driveable tq than a Vic Jr but was clearly behind it above 5500 rpm.But, I was using the same 750 demon as with Vic Jr. Dual plane requires a bigger carburettor. The added cubes of 393 vs a 351 definitely building tq so for a stroker a single plane might be desirable.
Few years ago I had a 357 W in the Futura.It had a Vic Jr + 750 Holley, Dart iron heads( 200 cc intake ports) a 248 degree mech cam. It was not enjoyable to drive on the street on regular basis since it felt like a 2 liter Escort below 4000 rpm.Revved furiously from 4500 to 7500 rpm.
When I changed the intake to a Stealth, heads to ported GT 40s( appr 170 cc intakes), a 750 vacuum carb , 224 I/E cam the engine was a joy to drive in everyday traffic.Had low/midrange torque to climb a tree and still revved furiously to 6500.
For the street 351 go with a dual plane + vacuum secondaries carb.[img]/phpBB/images/smiles/icon_spin.gif[/img]
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