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Offenhauser Dual Port intake manifolds feature completely separate runner systems for the primaries and secondaries for more power across the rpm range. At low-load, the primaries feed the air/fuel charge through the smaller bottom passages at near sonic speed, improving power and efficiency. When the secondaries open, their charge goes through the bigger, cooler upper passages. Then, in turn, it is rammed into the cylinders when it encounters the high-velocity mix from the primaries. The results are better fuel economy and a 15-30 percent power increase across the entire rpm range. These manifolds are available in a variety of styles and options for many year/make and engine applications.
( 45 )
$799.99
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$841.99
Offenhauser low-profile Dual Ram aluminum intake manifold bases are even stronger than the single quad versions, which appeals to the all-out racer seeking increased horsepower and RPM. Order the base recommended for your year/make and engine application.
Not Yet Reviewed
$875.99
Offenhauser's dual quad high-rise manifolds take the best of the company's 360 degree Equa-Flow technology and double it. Each 4-barrel sits on top of its own split plenum, which feeds straight, tapered runners that dive directly from the plenum to the intake ports. This results in extremely even, efficient cylinder filling, which eliminates flat spots and produces hefty power bands, starting as low as 1,800 rpm and running as high as 8,800 rpm. Edelbrock Performer series and Carter AFB carburetors are recommended. Some applications cannot mount Holleys in any manner.
( 1 )
$774.99
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$841.99
Offenhauser 360 Degree Equa-Flow Dual-Quad Low-Rise intake manifolds make good use of Offy's 360 degree technology to feed all cylinders evenly and make more power. This results from their single-plane configuration, with its unique split-plenum chamber and tuned intake runners. That combination delivers the fuel-air charge evenly to all cylinders for more power without flat spots. Edebrock Performer series and Carter AFB carburetors are recommended. Some applications cannot mount Holleys in any manner, or clear HEI.
( 1 )
$841.99
Offenhauser dual carburetor intake manifolds mount two carburetors on branched intakes, with a look that's straight from the early days of hot rodding. They're available for a number of applications to fit your speed demon needs.
( 8 )
$750.99
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