Promaxx 320 flow numbers
01-16-2017, 08:36 PM
#101
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Location: Murrayville Georgia
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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?
01-16-2017, 08:56 PM
#102
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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?
01-17-2017, 02:00 PM
#103
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My head guy said the same thing getrdunn. That what you are getting from the big companies, like dart, afr, etc, is MUCH better than they were 20 years ago. Still not perfect, but much better quality.
Im sure JimV has plenty of stories of aftermarket heads having issues right out of the box, irregardless of the name on the box
Im sure JimV has plenty of stories of aftermarket heads having issues right out of the box, irregardless of the name on the box
01-17-2017, 02:03 PM
#104
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...
01-17-2017, 02:15 PM
#106
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He doesn't have a Canadian performance cylinder head company.
01-19-2017, 08:36 PM
#110
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!!!
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!!!
