I put a set of small block ones on a customers engine (he supplied). the quality looked great which was a surprise given the cost. they were assembled heads and we didnt do anything to them as the motor already made more power than the tires would hold. my big question is how do these compare out of the box to brodix, dart, afr, etc. I know that with porting you can do a lot but I am interested in the starting point. anyone have the numbers of the others to put up to make an easy comparison?

They were posted earlier by someone. Pretty similar to that of any non cnc head plus or minus 320 cc runner. Not sure about sbc. if we find anything worthy of mentioning I will certainly post so others know.

I was probably one of the first cheap kunts to run PROCOMP... I ran them and ran and ran and ran them... ran the ballz of them!! however I was savvy enough to do "The Finishing" myself!! and set the spring pressures properly... again, anyone foolish enough to run ANYONE's cylinder head "outta the box" is just that... FOOLISH.. I don't give 2 chits who's name is on the box, I've had to do the same work on Dart or Brodix than I had to do on a Procomp.. so there ya have it!!! Thanks China what you did is made the big boys take a bow and say ok we have to get real with today's market pricing!!!

as for Promaxx... they are doing my new marine Supercharger series heads!! so for whatever that's worth to ya.. they are clean, as nice of anything I've paid double for outta Brodix!! and they flow pretty damn close to what they claim, and the minor variance I would attribute to a difference in flow testing equipment and/or environmental issues...

Tell us how you really feel big AL !

He doesn't have a Canadian performance cylinder head company.

Might be one soon!!!!!

Oh boy... this is news for me!!! :ernaehrung004:

who is the "HE" you're referring to SB?

ok.. Steven is a reputable foundry... but he's not really interested in small volume buys... minimum order to make a worthwhile deal is a pallet of 40-50 units at a time, then you're having to ship outta China, that could go really well or really badly? average is 35-45 days to see the product, not worth all the red tape for a few units...
this brings me to Promaxx, same quality a little more money, no issue. they do not build a marine head so bare casting is the only way to get them (IMO) it's really the only way I get heads anyways as I do the finish work and setup in house so I know what goes into them...

stay tuned for future updates and my new heads!!! :cartman: