Promaxx new iron mag heads, good quality

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You did not say what you wanted to use them for. If it’s for a stock replacement they will likely be fine once you get them checked out by a competent shop for valve guide clearance and valve sealing. Don’t skip this extra cost unless you can check it yourself.
I would guess these are very similar to head castings two other members here had threads posted for.
Here is the latest one. Can’t find the previous one yet.
Speedmaster magnum inspection w/Justin
 
you guys are great, thank you! I was gonna race em so I will likely pass on em

Robert,what kinda power are you lookin for? Those heads will probably support 350-375HP with all the right accessories.
 
2bbl rochester. ex manifolds. 9-1 cr 360 eng. iron heads. no porting; class rules. 3/8 mile dirt track in a 63 dart, that's gonna be my weapon, light weight compared to what the chebby boys are running!
 
2bbl rochester. ex manifolds. 9-1 cr 360 eng. iron heads. no porting; class rules. 3/8 mile dirt track in a 63 dart, that's gonna be my weapon, light weight compared to what the chebby boys are running!

Will they allow EQ heads under the rules? I know some of the 2bbl racers use them here in GA.
 
Aren't they new heads? Why would there be a core charge?
 
there was a crook named ben gorman of promax (just 1 x) & way back he sold me a set of EQ's that were chinese knockoffs. yes they allow EQ's, maybe!
 
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?
 
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?

believe it or not giving cfm numbers to .800-900 although a bit high gives you some good info about the head or the cnc or porting work done. If a head has cnc numbers that continue to climb and not fall on its face it tells you they got their program right. Heck my son is running a cam under .500 lift and I flowed to to .800
 
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?
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.
 
that's gotta be the one (it was years ago but for sure it was ben gorman of promax (not promaxx)

i talked to the owner of ProMaxx a few years ago and he seemed like a very nice guy. He answered any questions I had and even offered me a pricing deal. The set of small block heads I checked out for my buddy were very nice. No valve job redo needed on those heads.
 
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