Just got off the phone with Promaxx. There BB 210 heads are 6 weeks out, fully assembled. I really look at .400 lift flow - 256 cfm's, and @ .500 278 cfm's. It's hard not to like these heads.
I only ever had one set of ProMax heads in my hands and they were my buddy’s standard port small block heads. I was impressed by the quality of the work, including the valve job. You may have seen the post I made about them.
