Trick Flow’s PowerPort Heads Give Big Flow To Your Big Block Motor

tfs-4141t804-c02Trick Flow‘s new PowerPort 365 aluminum cylinder heads are no joke when it comes to serious performance. CNC-machined intake runners move air quickly and efficiently, while refined wall runners bump up the capacity while achieving great balance to improve your motor’s output. Read on below for more details.

Official Release:

Trick Flow’s PowerPort 365 aluminum cylinder heads offer a great combination of big flow and cost effectiveness. Designed to extract as much power from the conventional big block Chevy design as possible, the cylinder heads are ideal for racers that want extra airflow, but don’t necessarily want to go through the hassle and expense of converting to a “Big Chief” style cylinder head.

The PowerPort 365s have Trick Flow’s CNC Competition Ported runners; this top-of-the-line CNC machining process gives the runners a smooth, high resolution finish to maximize airflow. Trick Flow also revised the CNC-profiled combustion chambers to 119cc to help support higher compression ratios without compromising airflow.

A lot of work was spent balancing and maximizing airflow among all eight intake runners. On a factory-style head, the runners for cylinders one, four, five, and eight are “curved wall,” or dogleg style. These runners flow less than the other “straight wall” runners, meaning their respective cylinders get less air. Trick Flow reworked the curved wall runners on the PowerPort 365s to increase their airflow capacity. The result is more equally balanced airflow to all cylinders, which produces more power.

As tested on Trick Flow’s Superflow bench, peak airflow is 424 cfm intake/337 cfm exhaust at .900 inches of valve lift. The PowerPort 365s flow well at mid-lift too; the intake side flows 385 cfm at .600 inch lift and 411 cfm at .700 inch.

The PowerPort 365s love cubic inches, high compression, or a power adder like nitrous and supercharging. Trick Flow recommends using the heads on engines that are 500 cubic inches or larger.

Features:

  • CNC-machined runners have a smooth, high-resolution finish to maximize airflow
  • Reworked wall runners increase airflow capacity and refine balance
  • Great match for forced induction/nitrous-injected builds

About the author

David Chick

David Chick comes to us ready for adventure. With passions that span clean and fast Corvettes all the way to down and dirty off-road vehicles (just ask him about his dream Jurassic Park Explorer), David's eclectic tastes lend well to his multiple automotive writing passions.
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