These tunnel ram manifolds are used primarily in drag racing, tractor/truck pulls and performance marine applications where high RPM performance is required. The effective RPM range is between 2,800 to 8,000 RPM. The WEIAND Hi-Ram, with it’s patented D-shaped port runners and large plenum chamber, provides optimum velocity of the air/fuel mixture to the cylinder head intake ports. For maximum performance in a naturally aspirated competition application, the WEIAND Hi-Ram is the manifold of choice! This manifold is designed to be used with performance oval port heads.
2 x 4 carburetor top
Square flange carburetor mounting
2500-7800 RPM power band
Special D-shaped port runner design
Large volume plenum
Power band: 2500-7800 RPM
Height: Front 10.12″, Rear 10.93″
Port Size: 2.34 height 1.55″ width
Carb Flange Center-To Center 9-11/16″
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