New Magnum heads for 347 with Flow data

skrews said
Clean up the short side and tickle the guides a bit, and I bet they'll be in the 220 ballpark. Bench racing LOL gotta love it.

Totally agree. These particular Magnums pale in comparison to the EQ's which move and honest 237-238 cfm ootb with nothing but a valve job touch up. Oh and they don't stall they just plateau. J.Rob