Promaxx new iron mag heads, good quality

gregcon said
It's amazes me anyone would even bother producing SBM heads in today's world. How much of a market can there really be?

As for Promaxx, I looked at their site briefly, at their 'Shocker CNC' heads for BB Mopars, and they look kinda funny with increasing CFM numbers out to .900 lift. Is anyone running .900 lift cams gonna be using a relatively low flowing BB head?
Click to expand...
Look around the big block is outnumbered by small blocks and the SBM is getting faster each year.
The big block production stopped in 1978 so their just isn’t that many as readily available as there used to be and sooner than later the production blocks will start drying up and prices will get outrageous. JMO.