>In the UK there was a TWR Offenhauser which was a dual plane. It had
>tiny little runners with very sharp turns.
That's the Dual Port. It's not a dual plane, BTW. The stock Buick/Olds
and Edelbrock Performer Rover intakes are dual planes. They have
a left/right split plenum with one side of the plenum higher than the
other. 4 of the runners (typically the outer two from one side and the
inner two from the other) feed from each plenum side.
>I used to run an Offenhauser 360 which is like a single plane manifold but
>with a divider in the plenum so that the left 2 barrels effectively feed
>cylinders 1,3,5 and 7 and the right does 2,4,6 and 8. Many people run this
>with an open spacer and it seems to pull harder at the top end, but with a
>flat spot in the midrange.
Any comparisons with how the 360 compares with any other intake
like a Performer or a Huffaker?
Thanks,
Dan Jones
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