Missing power 440?

Sometimes friends are not the best source of advice.

Better not to port the Victor intake unless you are going to use a 2" spacer above 5000 rpm. An unported Victor will make more power than a ported Victor between 3000 and 6000 rpm.

My dyno tests on a 496 stroker showed significant torque loss with ported Victor versus a gasket matched RPM dual plane.

RPM.............. RPM torque..................Ported Victor torque

3000...................543..........................................511
3100...................552..........................................510
3200...................579..........................................525
3300...................603..........................................573
3400...................615..........................................592
3500...................624..........................................604
3600...................632..........................................604
3700...................640..........................................611
3800...................632..........................................608
3900...................633..........................................608
4000...................630..........................................610
4100...................628..........................................609
4200...................624..........................................609
4300...................615..........................................607
4400...................604..........................................604
4500...................604..........................................603

After 4500 the Victor gets better than the RPM intake