[Hal Copple]

Niles, i have a 396 Stroked Windsor, Holley Vac Secondary 750 sitting on a Performer RPM, on port matched Trick Flow Twisted Wedge heads. I had my car on a chassis dyno last summer, with an analyzer in the pipe.

I run 70 jets front, 80 rear (i took out the metering plate, put in a metering block, so i could swap out the rear jets easily). You do need a longer fuel inlet rail to do this, as the carb is about a half inch longer.

Anyway, my car has always run perfectly with this, good mpg, about 50 quarter mile runs, lots of road course laps (about 300). In the winter, since i drive all year here in SC, i put in front 71's to take advantage of the more dense, cooler air. I can trundle around in fifth at 1100 rpm and not stumble on acceleration. I had over 400 foot pounds of torque at the rear wheels on this set up, and the car drives fine. This is my suggestion.

I tired a bit richer in the fronts, by my town drivability deteriorated with each upward jetting.