THIS IS A PAIR OF ORIGINAL IMCO POWER FLOW BIG BLOCK MANIFOLDS. THESE MANIFOLD WERE ON MY PERSONAL BOAT WHICH HAD NO MORE THAN 10 TRIPS ON IT (VERY LOW HOURS). THESE MANIFOLDS ARE IN VERY NICE CONDITION. INCLUDED ARE THE POWER FLOW MANIFOLD, 90 DEGREE RISERS, AND CUSTOM BUILT TIPS WITH THE BAFFLES BUILT INTO THEM.
INFO:
These high performance manifolds are unique in design, that creates a high velocity airflow that increases torque, rpm, and horsepower over stock cast iron manifolds on big blocks. We have experienced 40 to 50 foot pounds of torque on big block 502, 415 horsepower motors, and 80 to 90 foot pounds of torque on engines up to 575 cubic inches.
Powerflow manifolds are water-jacketed, water surrounds each exhaust passage, including the ports to eliminate burnout. Black manifolds are hard anodized prior to powder coat, to ensure against corrosion. All manifolds are available in Recirc or standard.
Our Powerflow manifolds have a weight savings of 80 pounds over stock cast iron big block manifolds. It allows for twin engine mounting down to 33” centers. (DIRECT INFO FROM IMCO'S WEBSITE)
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