Specifically the 2117 or 2121 225cc runner versions. The shocker 210 cnc sbf heads are tops in the industry.
Promaxx Performance 185cc Aluminum Cylinder Heads Straight Plugs Small Block Chevy
Promaxx sbf heads reviews. Anybody here run the promaxx former patriot heads. Maximum quality maximum performance and minimum pricingpromaxx maxx series sbf cylinder heads take affordable power to the next level. Credit for those impressive flow figures goes to full cnc porting including the 60cc combustion chambers and a 208160 stainless steel valve package. Supposed to be a five angle. Compare performance and price and you will see it is no contest. I saw a vidoe on youtube of the promaxx headsthe guy had done saw cuts showing the ports and had tested the materaili m pretty new on the head porting game would like to ask some of the pro guys to check it out and see what they think of themthese heads are actually patriot clyinde headsthey just closed down and changed there name see if we can get some fed backk from the pros on them.
Find promaxx performance maxx series small block ford cylinder heads 9175 and get free shipping on orders over 99 at summit racing. Want to run pump gas and need a cheap aluminum head. Can order them with a 185 runner and seat cut for the 2055. Go out and shock the competition. Going to get them bare for 700 and add my own 2055160 plus 200 chevy valves and comp. Flowing over 328 cfm through only a 210cc runner will make the power you need from your big cubic inch small block ford.
We previously ran these promaxx heads on a smaller 347 stroker but with 210cc intake ports that flowed over 320 the heads were better suited to a larger more powerful stroker combination. With ultra smooth grade a 356 t6 aluminum castings that are precision cnc machined these small block ford heads deliver. Thinking of picking some up for a budget solid flat tappet 350 shoot for maybe 500 crank hp rev to 6800 7000 single plane intake 4150 holley 750dp hot rod magazine were pretty happy. Springs and retainers i already gotwith a complete port job.
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