I love this guy. I subscribed after seeing the first video from him because you can tell he's an honest man and tells it like it is and knows what he's talking about. No marketing BS or hidden agenda. I've learned all kinds of things I never knew I needed to know. Also he showed me things I've always wondered, but nobody talks about, like the time he said "watch this guys" and stuffed a REAL header tube up against a flowing exhaust port to show what happens when the air is forced to turn 90 degrees like ALL headers do. The flow was affected significantly. Really gets you thinking about headers that "cheat," that is the tube is not tangent to the head flange surface in order to make the header easier to design, manufacture or to simply work in an impossible chassis. I want this man to do my next set of heads IF I'm able to afford another set AND if the parts are even available by the time Biden and Pelosi are done with this country and the rest of the world. Thanks Eric.
Rayfield, these heads work very well. And they are almost perfect right outta the box. Very good heads for the Sportsman type racers. Big punch for a fair amount of money. This fellow here knows what he's talking about. I've been flow testing over 40 years and I watch and listen just to see where he's at. He's a respectable person in the Feild. I'll say that for him 💯 👍
Excellent! I am a head porter in .CA I get alot of PW heads which are not always. But often a china copy of a promaxx. Which means we have to now consider if what we buy is a china copy. Or a china copy of a china copy of a american head cast in china. So I give up. It all means donut anymore. Because I cant get enough parts to complete a lawnmower. Anyway, great video as usual.
P.S. I've seen more than one TH-cam channel get more business by showing their work and being honest, even with their fk ups, just make it right and move on. u get a reputation for being honest and putting out good work, people will send and bring their stuff from thousand miles away. all to get an honest man.
Good video! One thing you should bring up on SBC heads evaluations is whether it's angle plug or straight plug. Not all of us have headers that play nice with angle plug heads.
I just looked at the ProMaxx website,and they list the 185X as straight only,the 200X as angle only,and the 215X as available in both,. Part number 9215S or 9215A (for bare heads). Personally,I think the 200's should have both options,too.
Oh, ok they told me they only had straight in 185. But I wasnt interested in the 215 at the time so didnt really look at it. I agree, the 200 should be in straight plug, especially since that will cover pretty much any sbc. And angle as an option.
Looking at the ports, that appears to be an investment casting. Which creates a much finer/smoother surface than a sand casting. It also makes shapes and lines in the castings much more defined.
The Pontiac heads that Runt Pittman made for the 1995 Daytona 500 winning #4 MonteCarlo Kodak car were 23 degree heads remachined to 18 degrees. They had 44.5 cc chambers, and 259 runners and raised intakes. They flowed to the limit of the 850 Holley mandated by Nascar. The exhaust ports were 2" matched to the headers and the primaries went all the way back to the gearbox and 3.5 inch collectors to a cross box. I'd be interested in getting your opinion.
Bought a set of these complete through jegs over the winter for ~$1260 complete for hyd. rlr., .600 lift, angle plug, 8mm stems. I think promaxx advertised them at 305cfm, figured they would fall 10-15cfm short of that and still be a deal. Glad I wasn't swindled.
Was wondering if this head would be to big for a built up 355 sbc, and if so could you please recommend something, I do plan on possibly getting something from you, love your videos, honesty and would like to support your business TIA
Great info, we was thinking of getting the Project X or AFR 220 heads for our 383. How much is it to port the Project X head. I am assuming a port job on the Project X head would have it better than the AFR 220 CNC head???
back in 05 my son got a par of these heads, i don't remember the Pro part just the Maxx, so i might be wrong, but my point is for the money, they put out decent number. of course he got them bar.
Eric HELP! I have a 454 BBC, Procomp heads, Weiand Track Warrior int, QFT 950, hyd roller, 12.5 comp, power glide in a 2800# Vette. The engine pulls OK to 6000 RPM then all hell breaks loose. The tone of the engine changes, power comes on instantly, the tach jumps to 6300 (flashing the converter). It feels like a 200 shot of nitrous hitting it, except there isn't any. The only thing I did was gasket match the heads and intake. Didn't touch the chambers or bowls. No one can figure it out. Possibly a weird reversion? You're my last resort, have you ever heard of this?😥
Awesome job as usual Eric. Curious what will happen after the chambers are smoothed out. Was thinking about getting these on a 13:5 to 1 solid roller 385.
That long side in the intake runner seems wrong. When porting its be better to opening up that side to get a better flow and swirl. Its must flow more in to the middle of the cylinder.
I have been watching your videos and you have really inspired me. I am a machinist and make many parts for our pulling tractor. I even made a stroked crankshaft for it. We are allowed to run a recast head but most are actually too big for the small turbo that we run. I would like to make a head for it and I can get one cast but I need to do a lot of research to find the best shape and size for the ports and valve. If I made a head the size of one cylinder on a 3d printer would this be possible to flow or would the plastic flow different than the cast iron. I was thinking the plastic would be cheap and easy to alter for testing.
Is the metallurgy improving on the China heads.. I know you said you had issue welding some in the past... But looks like most are advertising them as A 356-T6. The few I've had seem to be what ever spec they used to claim, I think it was AC4B but it definitely ages different then the old American castings I've had.
Eric can you please recommend a set of heads for my sbc just to face on the street on the weekends and god to the car shows and something that performs really good. Im so confused there's so many types on the market now. Thx.
@@WeingartnerRacingok thanks for the clarification. Do you recommend some form of offset rocker for these heads? Promaxx description of this head claims OEM valve spacing, my set seems something in the region of .100 offset on intake would be better suited.
Hi Are you talking Eliminator series heads ?? Is there certain cc sizes that are made in China or are the race/street vs competition versions made in different countries ??????
All small block, Chevy AFR heads or cast overseas in China. The difference between the enforcer and eliminators is this. The enforcers are entirely machined in China then assembled in America. The eliminator‘s are cast in China then all machine work is done in America and assembled in America.
In your opinion do the raised exhaust port heads give more or less spark plug and wires clearance than the standard height exhaust port heads with headers?
Have you tried to flow the exhaust port in the right direction? I know it's a bit tricky, but the direction of the flow matters. Odd shapes (vains, valve guides etc.) act differently depending on the direction of the flow. Also knowing the actual flow speed and volume makes the header design easier.
I can't find any information on GM fast burn heads. Would the fast burn be better or equal to the as cast promaxx X heads? I'm running a 1972 remanufactured 350 truck eng. With comp k cam in my S10. And wanting to swop to right bolt on heads! What would you recommend?
Higher flowing than Visner, Noonan, Frankenstein, All Pro, Late Model Engines and PRC from Texas Speed? Interesting. Excuse me Visner and Noonan are billet.
@@WeingartnerRacing I didn't stick around long enough to hear that, thought I'd finish watching later. Still, they didn't lose any business with me, I'm staunch Brodix.
@@WeingartnerRacing i agree, i want a set for my 383ci ls1. 340 cfm is what they claim which would be an awesome gain over my 260ish cfm hand ported stock valve 243s
I wonder Eric.. What a simple cartridge roll throughout it and smoothing at the valve lip would do? For "SHITS AND GIGGLES"?!? I wouldn't buy it just out of common decency, knowing they steal (EVERYTHING) over there! AFR or NOTHING for me!
I retired 15 years ago. Unless the Gods fixed pro-max, never waste time or money. Over 8 hours work new out of the box, to make usuable.... Then one cracked. Nope.
![BOWKYLION - วิงวอน (ex-change) [Official MV]](http://i.ytimg.com/vi/cLdnZWDaO-w/mqdefault.jpg)
I love this guy. I subscribed after seeing the first video from him because you can tell he's an honest man and tells it like it is and knows what he's talking about. No marketing BS or hidden agenda.
I've learned all kinds of things I never knew I needed to know. Also he showed me things I've always wondered, but nobody talks about, like the time he said "watch this guys" and stuffed a REAL header tube up against a flowing exhaust port to show what happens when the air is forced to turn 90 degrees like ALL headers do. The flow was affected significantly. Really gets you thinking about headers that "cheat," that is the tube is not tangent to the head flange surface in order to make the header easier to design, manufacture or to simply work in an impossible chassis.
I want this man to do my next set of heads IF I'm able to afford another set AND if the parts are even available by the time Biden and Pelosi are done with this country and the rest of the world. Thanks Eric.
Yeah !!!!!!!!!!!!!!!!
Thanks for watching.
Rayfield,
these heads work very well. And they are almost perfect right outta the box. Very good heads for the Sportsman type racers. Big punch for a fair amount of money. This fellow here knows what he's talking about. I've been flow testing over 40 years and I watch and listen just to see where he's at. He's a respectable person in the Feild. I'll say that for him 💯 👍
Gotta give it to you for a comprehensive review and comparison. Really in depth. Lots of info and insights.
Thanks for watching.
Excellent! I am a head porter in .CA
I get alot of PW heads which are not always. But often a china copy of a promaxx. Which means we have to now consider if what we buy is a china copy. Or a china copy of a china copy of a american head cast in china. So I give up. It all means donut anymore. Because I cant get enough parts to complete a lawnmower.
Anyway, great video as usual.
Moral of the story is don't have anything made in china because it will be copied then sold to your competitors.
Like reviewing these older videos this head is very good out of the box later Dyno results proved it's nearly as good as the fully ported head
P.S. I've seen more than one TH-cam channel get more business by showing their work and being honest, even with their fk ups, just make it right and move on. u get a reputation for being honest and putting out good work, people will send and bring their stuff from thousand miles away. all to get an honest man.
I agree.
Good video! One thing you should bring up on SBC heads evaluations is whether it's angle plug or straight plug. Not all of us have headers that play nice with angle plug heads.
The only Projext X head that has straight plugs is the 185. All the rest are angle only. I wanted the 200 but couldnt chance the headers not fitting.
I just looked at the ProMaxx website,and they list the 185X as straight only,the 200X as angle only,and the 215X as available in both,. Part number 9215S or 9215A (for bare heads). Personally,I think the 200's should have both options,too.
Oh, ok they told me they only had straight in 185. But I wasnt interested in the 215 at the time so didnt really look at it. I agree, the 200 should be in straight plug, especially since that will cover pretty much any sbc. And angle as an option.
These were angle plug.
Looking at the ports, that appears to be an investment casting. Which creates a much finer/smoother surface than a sand casting. It also makes shapes and lines in the castings much more defined.
Could be very nice.
Can’t wait for you to port this, keep doing what you’re doing brother!
They are schedule to start on them November 14
The Pontiac heads that Runt Pittman made for the 1995 Daytona 500 winning #4 MonteCarlo Kodak car were 23 degree heads remachined to 18 degrees. They had 44.5 cc chambers, and 259 runners and raised intakes. They flowed to the limit of the 850 Holley mandated by Nascar. The exhaust ports were 2" matched to the headers and the primaries went all the way back to the gearbox and 3.5 inch collectors to a cross box. I'd be interested in getting your opinion.
I would have to have the heads here and measure them to get my take but you can't argue with success.
Hey man, you are one of five, that I TRUST YOUR FLOW NUMBERS.
Thanks.
Bought a set of these complete through jegs over the winter for ~$1260 complete for hyd. rlr., .600 lift, angle plug, 8mm stems. I think promaxx advertised them at 305cfm, figured they would fall 10-15cfm short of that and still be a deal. Glad I wasn't swindled.
Preinflation prices were awesome.
Great video , I’m watching to catch up , I have exact bte glide pro tree brake , my boy loves it , 18 & 50 year old enjoying time at track together
Was wondering if this head would be to big for a built up 355 sbc, and if so could you please recommend something, I do plan on possibly getting something from you, love your videos, honesty and would like to support your business TIA
Great breakdown; Love the number comparisons!
Thanks
I been waiting on these … I have a set been had em since December haven’t bolted them up yet hoping for some good power
Give them a try. I think you will be happy.
Great info, we was thinking of getting the Project X or AFR 220 heads for our 383. How much is it to port the Project X head. I am assuming a port job on the Project X head would have it better than the AFR 220 CNC head???
Can you do the Project X 210 SBF heads? Curious to know if they are worthwhile also.
I would if they ever came in.
Would like to see also...
I have a new set of 210cc CNC sbf Promaxx heads, can I get you to flow bench them?
@@jamesshepherd1665 I can do that just send them in.
Very nice work Erik you mention another guy you know on youtube great porter like you what is his videos can you send his link thank you.
back in 05 my son got a par of these heads, i don't remember the Pro part just the Maxx, so i might be wrong, but my point is for the money, they put out decent number. of course he got them bar.
Eric HELP! I have a 454 BBC, Procomp heads, Weiand Track Warrior int, QFT 950, hyd roller, 12.5 comp, power glide in a 2800# Vette. The engine pulls OK to 6000 RPM then all hell breaks loose. The tone of the engine changes, power comes on instantly, the tach jumps to 6300 (flashing the converter). It feels like a 200 shot of nitrous hitting it, except there isn't any. The only thing I did was gasket match the heads and intake. Didn't touch the chambers or bowls. No one can figure it out. Possibly a weird reversion? You're my last resort, have you ever heard of this?😥
Those heads are junk.
Awesome job as usual Eric. Curious what will happen after the chambers are smoothed out. Was thinking about getting these on a 13:5 to 1 solid roller 385.
I might try one just to see.
Love to see b-1originals review
That long side in the intake runner seems wrong.
When porting its be better to opening up that side to get a better flow and swirl.
Its must flow more in to the middle of the cylinder.
Ok
Good honest info. Much appreciated
Thanks for watching.
I have been watching your videos and you have really inspired me. I am a machinist and make many parts for our pulling tractor. I even made a stroked crankshaft for it. We are allowed to run a recast head but most are actually too big for the small turbo that we run. I would like to make a head for it and I can get one cast but I need to do a lot of research to find the best shape and size for the ports and valve. If I made a head the size of one cylinder on a 3d printer would this be possible to flow or would the plastic flow different than the cast iron. I was thinking the plastic would be cheap and easy to alter for testing.
In theory it should be able to be flowed.
@@WeingartnerRacing IM printing it now. lol
@@WeingartnerRacing here is a little video of the 3d model
th-cam.com/video/YdVAR4XNJMk/w-d-xo.html
Is the metallurgy improving on the China heads.. I know you said you had issue welding some in the past... But looks like most are advertising them as A 356-T6. The few I've had seem to be what ever spec they used to claim, I think it was AC4B but it definitely ages different then the old American castings I've had.
I haven't had to have any welded so I don't really know.
@Eric
Have you done any flow numbers on speedmaster79’s 15deg heads?
Eric can you please recommend a set of heads for my sbc just to face on the street on the weekends and god to the car shows and something that performs really good. Im so confused there's so many types on the market now. Thx.
I would need more information. It’s best to email.
Do they make this project x head with straight plug as an option, or is angled plug the only way to get them?
Standard spacing stud girdles will not come close to fitting this head. Also am on the fence if standard stud rockers are what should be recommended.
Afr stud girdles fit
@@WeingartnerRacingok thanks for the clarification. Do you recommend some form of offset rocker for these heads? Promaxx description of this head claims OEM valve spacing, my set seems something in the region of .100 offset on intake would be better suited.
Hi Are you talking Eliminator series heads ?? Is there certain cc sizes that are made in China or are the race/street vs competition versions made in different countries ??????
All small block, Chevy AFR heads or cast overseas in China. The difference between the enforcer and eliminators is this. The enforcers are entirely machined in China then assembled in America. The eliminator‘s are cast in China then all machine work is done in America and assembled in America.
Eric Weingartner, if the vein was cut out, would it cause the swirl to run in the opposite direction? If not, how would it affect swirl and flow?
I have seen were people made them straight and lost power. That could be related to chamber design.
In your opinion do the raised exhaust port heads give more or less spark plug and wires clearance than the standard height exhaust port heads with headers?
It really depends on the header.
What do you think about the promax rec port heads for the LS1? They seem like a good value
I haven’t seen them yet.
Have you tried to flow the exhaust port in the right direction? I know it's a bit tricky, but the direction of the flow matters. Odd shapes (vains, valve guides etc.) act differently depending on the direction of the flow. Also knowing the actual flow speed and volume makes the header design easier.
It is flowed in the right direction. It blows out as it would in an engine.
@@WeingartnerRacing 👌🤣🤣..
Thank you for your knowledge and video's USA 🇺🇸 USA 🇺🇸
What is the valve spacing? A standard stud girdle and a 60/40 girdle will not fit these heads.
Its standard valve spacing.
Thanks for the knowledge. The video has alot of wierd glitches.
If you watch it when it first gets published that happens.
I can't find any information on GM fast burn heads.
Would the fast burn be better or equal to the as cast promaxx X heads?
I'm running a 1972 remanufactured 350 truck eng. With comp k cam in my S10. And wanting to swop to right bolt on heads! What would you recommend?
hell no.
The only other heads I was considering is trick flow but if I'm correct the promaxx X is the winner 🏆
Is the same to expected from the Ford head ?
I don’t know I haven’t seen that head yet.
Have you ever worked with the hemi head for small block ford from Hammer head performance?
Not yet but someday.
They look pretty good for a import head
Yep
Higher flowing than Visner, Noonan, Frankenstein, All Pro, Late Model Engines and PRC from Texas Speed? Interesting. Excuse me Visner and Noonan are billet.
Yes for a sbc that’s as cast.
Awesome video
Is there a big difference from the older 227 head to the new 227 head from afr ? Because I have one that is at least 15 years old thanks.
The pre eliminators are vastly different than the current eliminator heads.
Thank you
great stuff Eric👍
Thanks for watching.
What kind of bronze do these things use for the guides?
No idea.
The fact that the Chynees crap is better than the AFR they copy tells me there'll never be anything from AFR in my future.
You must have heard wrong. The afr is better. It a good 10cfm better.
@@WeingartnerRacing
I didn't stick around long enough to hear that, thought I'd finish watching later. Still, they didn't lose any business with me, I'm staunch Brodix.
@@WeingartnerRacing on the other hand its only 10
Cast in China? Ha ha ha ha. PMSL!
Very professional .
Do they make these for ford ? Whats your fav ford budget head
Yes they do.
@@Comet-hn3gm awesome
Wait, did Promaxx send you this head to review?
No I ordered a set for a customer.
How much power would these make in a sbc 383?
Depends on a lot of variables.
Is this truely the highest flowing as cast head and will it work on sbc 350 stock bottom end?
I keep bouncing between trick flow and 185 promaxx.
It’s the highest flowing as cast head I have flowed and I have flowed many. Cnc and hand ported heads beat it.
@@WeingartnerRacing
ok great 👍. So should I go with 185 or 200 promaxx on stock bottom 350?
Have you tried promaxx small bore ls3 heads?
No but I would like to.
@@WeingartnerRacing i agree, i want a set for my 383ci ls1. 340 cfm is what they claim which would be an awesome gain over my 260ish cfm hand ported stock valve 243s
I wonder Eric.. What a simple cartridge roll throughout it and smoothing at the valve lip would do? For "SHITS AND GIGGLES"?!?
I wouldn't buy it just out of common decency, knowing they steal (EVERYTHING) over there!
AFR or NOTHING for me!
I don't think it would gain as much as some other heads.
Does this include the Texas Speed PRC 227 heads?
I wasn’t aware Texas speed made a sbc head.
That’s an LS head
@@shaadydog1 Yep, I misspoke.
Would these work great on a 406 SBC?
Yes
Definitely cnc'd ported
Why do you think so. They seem as cast to me.
Isn’t Promaxx what Turbo John uses?
Im not sure I don't watch much tv.
He runs profiler
@@mayhemmotorsports7002 same thing hahah JJ thank you
Looks like my AFR heads
Probably.
I retired 15 years ago. Unless the Gods fixed pro-max, never waste time or money.
Over 8 hours work new out of the box, to make usuable.... Then one cracked. Nope.
I have dynod and sold many of their heads and have yet to have one problem.
Not fooling me with Those CNC ported heads
Cast in china, machined here with Japanese machine hummm😂
Give them a year. They will be all over ebay cheap.
Most likely
Already on Alibaba but still more expensive than the dart clones
BE AWARE...there are lots of f'd up heads on ebay.
@@indyrock8148 do you have a link for Alibaba for these? Thanks Matt
Plot twist; AFR is copying China heads
🤣🤣🤣
first
Congrats. Even I don't know when Im going to put out a video.