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08-02-2008, 08:34 PM
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Offenhauser Port O Sonic intake manifold
I have this manifold in my garage
i was wondering if you guys could tell my something about this manifold, if it is any good ? This is for SBC and this is a mid raise single plane intake.... best regards... 
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08-02-2008, 09:29 PM
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A quote from the Offy web site regarding those intakes.
Designed for serious racers. Offenhauser Port-O-Sonic intake manifolds are designed for competition only. They feature special plenums and runners configured to match the volume of each specific engine, in order to produce maximum power. They eliminate the lean/rich conditions found from runner to runner in most aftermarket manifolds; and they're dyno-proven to increase power across the entire rpm range. Increases can start as low as 2,000 rpm and go as high as 8,500 rpm. Lots of info if you google it.... Mark
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08-03-2008, 04:46 AM
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hands down one of the best manifolds out there!
I been using them for years. sure they cost more but the extra cost is evident in the gains in performance.
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