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FlowTek BBC 290cc Head Review With Real Flow Numbers
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ProMaxx BBC Head Review... Page 6 Team Chevelle
WebMar 12, 2016 · Joined: Sun Jul 05, 2015 10:01 pm. Location: Re: Promaxx 317 BBC head for 496 build. by Frankshaft » Wed Mar 09, 2016 2:59 pm. You might be under estimating the power potential of these things. A solid roller pump gas 496 with very mildy ported 781's can make 700 hp fairly easy. 600 is simple, like literaly not trying. WebSep 30, 2024 · A 10-12” pipe after the flange supposedly gives the air plenty of distance to straighten out and this helps flow numbers everywhere. But...I do wonder about the exhaust side of your bench now comparing these numbers to my other couple sets of ported heads. WebPROMAXX Performance Freedom Series Big Block Chevy Cylinder Heads 2211. Cylinder Heads, Aluminum, Assembled, 119cc Chamber, 320cc Intake Runner, Chevy, Big Block, … eyebrows wollongong