Eric,WeingartnerRacing wrote: ↑Mon Nov 19, 2018 10:14 amActually most of my other heads like my dragon slayers don’t back up at .600. This heads vane really messed with things.steve cowan wrote: ↑Mon Nov 19, 2018 8:59 am Eric,
Thanks for sharing your results, in my opinion it shows again that no matter what logo these medium sized 23 degree heads all seem to have turbulence around that 600" lift range. With that csa at the pinch they would work well on a 421-434 sbc at 6000-6500 rpm.
ERIC,
Are your exhaust throat % above 90%??
I understand if you don't want to share that one, just curious as I am trying to figure out apart from the reversion side of the equation, would it help velocity through the exhaust port so you don't have to oversize the flange area bigger than required and or does it help with overscavanging problems at higher rpm,just thinking out loud hear,
Anyway anything else you can share is a bonus, thanks
Just to clarify, I should of wrote that most small block heads out of the box seen to be have airspeed problems around 600" lift,
I know you're stuff runs good, I was not having a pop at you in anyway.
C H A D gave a good explanation on the exhaust deal so thanks for that.
I have read it and said it before that a exhaust port can not be designed on a flow bench alone, I am going to throw it out there and say velocity is king,
Anyone like to add, would be appreciated