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my CNC'D Indybrocks flow 302@ .550 and 313@ .700 on Ryan's bench and seem to be making pretty good steam on my 416 considering the baby roller I have in the motor so far they have pushed my ride of 3000 lbs to 6.50 @ 105 in the 1/8 in terrible air of 95deg 90% humidity with rain on the horizon.





wow, i think i should get a set of those, they flow better than my w5's do




Just stating what is written on my flow sheet.I would think a set of GOOD w5's should flow more than 313.




His heads do flow more than 313 on my bench...... & his 9.80 ET's suggest they make more power than a typical INDYbrock & the timeslip, unlike #'s on a flowbench are all that matters.



the timeslip is all that matters so far I am happy with what these heads are doing considering the roller is only 246/254@ 50 and only .592 lift and they have run 6.52 @ 106 in a 3000 lb car in terrible air I think that pretty good for what they are.


70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4