What would it take to make 1.44 lbs-ft per cid ?

273 said

Is there a velocity number you shoot for ?

From what I understand 260-285 fps based off average cross section is the supposedly the sweet spot but seems to be asking for fairly large ports, if I'm doing the calculations right seems based off 371 with the 277 cfm heads would need a average csa of 2.56" & 207 cc for 260 fps

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With an EQ Magnum velocity is very very high, in fact its much higher than what could be considered normal. Those heads had nowhere near CSA of 2.56". 207cc? CSA of 2.56" Not a chance--more like 185cc-186cc if I remember. When I took those heads to the largest I dared, for EMC 2012 on a 416ci, I almost found water @ 189cc and I made a pinhole in the top of a runner. Could you make these heads support 7000RPM peak HP @ 371ci? I doubt it.

These heads work so well because of the shape-which trumps cfm & velocity even when the velocity is 450+fps @ the S.S. Like any Mopar head with the exception of the HEMI you can't make them too big. Can you make them too big in the wrong area? Like any head-Yes. J.Rob