Getting the Intake on Intake Manifolds

Krazy Kuda,

Es Muy Excellente'.........

The Port Sizes

Upper = 1.10" W x 1.18" H ........ {For the Secondaries}
Lower = 1.10" W x 0.75" H ........ {For the Primaries}

What we found, when doing tests for Chrysler in 1972 thru 1974 on our 340 and 360 Drag Race Cars in Super/Stock.

The Offenhauser #6006 Dual Port worked best with an Automatic Transmission car, and with the 1974 '360' Engine and the #3671857 Cylinder Heads {1.88" Intake x 1.60" Exhaust}.

And with the Thermoquad #6453 Carburetor {1.500" Primary x 2.250" Secondary}.

We had to increase the size of the Primary Jets, as the Thermoquad #6453 was equipped with {.092"} Jets
which were too lean.