Single Plane or Dual Plane? The Great debate!

I have run both the Airgap and the Victor on my engine, no dyno results, just drag strip results.

Basic engine run down:
410 stroker, ported Edelbrocks, 10.8:1 comp, pump gas, small Comp solid roller (XR286R)248/254 with .576/.582 lift,
750dp, 8” converter, 727 trans, 4:10 gear, 28” tire, 3200 lbs street/strip car.

If I recall all the stats correctly (this was a few years back) the car initially ran quicker in the 60’ with the Airgap (~ 1.50 Airgap, 1.54 Victor), but the Victor pulled more MPH at the 1/8 mile (Victor was ~ 1.5-2 MPH faster than the Airgap). The car actually ran the same ET at first. After some tuning, changing pump cams and such on the carb, I got the 60’ with the Victor to match 60’ with the Airgap (both ~1.50). After that the Victor was just a little quicker in the 1/8.

Best with the Airgap was a 1.49 60’ and 6.89 @ 98 mph in the 1/8.
Best with the Victor (same year) was 1.49 60’ and 6.83 @ 99.2 mph in the 1/8.
Currently running with the Victor, 1.45 60’ and 6.76 @ 100.3 mph in the 1/8. This should see the 6.60’s in the spring :-D.

Basically my take on this data was if I had a slightly smaller cam, or less converter I would have been better off sticking with the Airgap. That Airgap is a beast of a manifold...I might throw it back on this spring just to see how it stacks up now that I have other issues with the car sorted out...it's just 20 bucks for gaskets and a few hours time to swap.