Some M1 porting pictures and flow numbers

Thanks again John and no worries. This tech was excellent and a great benefit for the forum and the small block guys. Now we know and there’s no guessing, assuming or wondering.


Well I took it upon myself today to do one more test since I was mounting up a TrickFlow head to get before and after numbers on a RPM and Victor340 intake so these are the flow numbers from let’s call it number 6 runner. This TrickFlow head has some issues going on that will have to be addressed at a later time as you can see from the flow numbers. At .450 lift it actually calmed the head down some to flow better with the intake on. If you remember for the last test I did a little reshaping at the top of the plenum and gained 3-4cfm so I blended the other 3 runners before todays testing. I feel this intake would easily support 500-525 horsepower

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