Funny thing about your willingness to share your knowledge is I'm actually now more willing to pay a professional porter because I have a better understanding of the knowledge, effort and value.
Very impressive results on your porting resulting in incredible gains Eric! It'd be interesting to see some dyno results "with vs without" regarding that backwards AFR style vane. I find the vane somewhat counterintuitive. What are your thoughts on it regarding high lift port stability? Those heads ought to be good for a min of 650hp on an optimized for drag race 400?
Beautiful work on those ports! What would you expect for horsepower from a 406 at 6500 with these heads, assuming cam, intake, etc, were optimized? Would it get to 625? As far as the pushrod pinch limit, could you cut the pushrod hole oversize and sleeve it like you do with some head bolt holes? Just curious on that one… Thanks Eric!
i had just done a set of lt1 6.2 variant. definitely a bit tricky of a head to work on as its a very thin casting around the port.... end of the day i almost broke into the exhaust port just trying to size the bowl and i hadnt even touched the exhaust side yet. i assume the 5.3s variant with the small 1.92 valve would be much more meaty and give more room to play? i would be interested also to know. as far as how these lt1 heads came out... at .650 flowed 362 exhuast at .650 no pipe 237. both ports kept flowing up to .800 lift and past.
I was always scared to over cc my intake runners being old school , would out of box these project x 215’s but cnc’d be great on 2450 lb drag only nova? Basics are I a 4.030 bore , 6 inch rod “355” 13.2 comp w64cc & .039 head gasket upgrading to a .675 lift roller & say 104 or 102 lobe separation? Or better use 200cc ? & have ported ?
Funny that these heads can flow this much at .700” or more lift but the piston isn’t moving enough to get a tenth of it without a blower. Useless with a NA engine where the first .200” of the intake opening.
Think FUNNEL of CROSS Section ?? ....Where is the RESTRICTION ??......Where is Smallest Cross Section in the PORT ?? Pushrod Pinch is 2.45 Sq Inch....91 % of 2.10" Valve Cross Sec - 8mm Stem Cross Sec =2.787 Sq Inchs ? Where is the RESTRICTION in CROSS Section ? ..1.24" x 2.25"= 2.79 CROSS Section.... Think FUNNEL- Manifold RUNNER to Head RUNNER too VALVE THROAT CROSS Section , Tapered Cross Sections ??.... Think FUNNEL - Exhaust THROAT CROSS Section Tapered to Header Flange , a 20% Bigger CROSS Section to 3-Stepped Primary Pipes to Merge Collector . . Cram the CROSS Section in and out - FUNNEL !!..2 Cents -
My experience were relatively the same when these heads first came out. But I had to do all the valve guides, all the valve work, surface.... nothing was right.... And after 6 months one cracked. I'm pretty sure it wasn't user error. He came to his senses, bought afr's .
What if you done a straight vein on those odd intake ports? Does the vein looks like it causes the air to turn the wrong direction when it’s coming into the chamber. What if you made that vein straight and leave the other two alone? Just a thought.
Nice looking head you got there hey I was wanting to ask you when you go with them 208s or two tens like that on the valves do you got to use offset rockers on them also
If your fighting the casting on the pushrod side for area? Why not narrow the center divider further? I'm curious about the AFR valves of the present day. I know your pretty much a "Drag Racer" so full power applications are under 20 seconds of duration o any given pass...Just curious if AFR still sources their valves from KAR valves like they were over 10 years ago when I bought my "Race Eliminator 195 CnC" heads. Me? I view my valves when I'm running stiff "Solid Roller" springs as a potential weak link in the system and am more than willing to pay the price for a known piece of quality hardware. I know you have said "Manley Valves don't flow" but, Manley is more than willing to make any head profile you desire for just a few dollars more over their catalog offerings if you need a specific head profile. We had them replicate the AFR valves years ago...We knew they were shaped like they were to enhance air flow....That 10% gain was pretty awesome on those heads but, if they would offer some with a wider spaced pushrod passage with more meat on the pushrod side? I think the flow numbers could be made far better. Why wouldn't you send a sample to Brodix to mold and make cores from and get some heads sourced from the USA that will allow you to do all that is possible with a 23 degree head?
If you make the divider too thin they do not seal. Afr has two different valves one is thicker. Afr has a parts warranty on their valves for two years. Brodix would do it but it would cost a fortune. Like 30k
So riddle me this... let's say, on this head for example (or ANY tight pinch SBC head) you were to machine the guide hole and move the pinch over as much as you could, how much could be gained? Obviously besides the expense and needing offset rockers and lifters.
I've been hearing good things about the Promaxx heads. I'm not sure what the total cost is but those will work very well. Thanks for sharing keep up the good work Eric
So once again let me ask about a 350 cid engine. Pump gas 9:1 engine, with these heads. Would it be a dog until upper rpms? Imagine these with a 350cid, lots of rpm and turbos. Maybe a 4.040 bore and 3.875 stroke 397cid high rpm setup shaft rockers. Now let me ask, can you do a dart cast iron version with these flow numbers. I’m really not a fan of aluminum.
You can get pretty big flow out of iron Pro Topline heads or RHS heads as they later became. Good luck finding them these days tho. Iron EQ heads from years back also worked well.
@@Levisnteeshirt1 I’ve bought both of the cylinder head dyno test books. Probably still go with some big dart 215’s or 220 heads. Gotta have the compression to make them work. Maybe even a set of aluminum heads. These numbers are for big hp! Gonna buy the big block book next.
Funny thing about your willingness to share your knowledge is I'm actually now more willing to pay a professional porter because I have a better understanding of the knowledge, effort and value.
Right there with you. Learned a ton from this channel. Really hope it takes off for Eric
That's a damn good head. Definitely make some power. Good job man.
Very impressive results on your porting resulting in incredible gains Eric!
It'd be interesting to see some dyno results "with vs without" regarding that backwards AFR style vane.
I find the vane somewhat counterintuitive. What are your thoughts on it regarding high lift port stability?
Those heads ought to be good for a min of 650hp on an optimized for drag race 400?
Nice. What was the velocity before and after porting?
Beautiful work on those ports! What would you expect for horsepower from a 406 at 6500 with these heads, assuming cam, intake, etc, were optimized? Would it get to 625? As far as the pushrod pinch limit, could you cut the pushrod hole oversize and sleeve it like you do with some head bolt holes? Just curious on that one… Thanks Eric!
Hell, they flow good enough, you should be able to make 580/590 no problem as they come from the factory!
I’d say closer to 700 horse depends on cam and everything else.
Probably could make 650-700hp with that head on a radical 406.
In 19999 we would've killed for these heads
THANK YOU FOR GREAT KNOWLEDGE.. YOU ARE SUPERMAN 🦸♂️ IN MY BOOK..💪🏽💪🏽
What is the price to port the Project X 215 heads?
What did this cost. Bigger valves and port job what does that run $
Like to know the same
Me too !
More than the heads cost.
How about sleeves in the push rod holes?
Eric... do you have any experience with the Gen 5 L83 cylinder heads as far as porting or flow numbers?
i had just done a set of lt1 6.2 variant. definitely a bit tricky of a head to work on as its a very thin casting around the port.... end of the day i almost broke into the exhaust port just trying to size the bowl and i hadnt even touched the exhaust side yet. i assume the 5.3s variant with the small 1.92 valve would be much more meaty and give more room to play? i would be interested also to know. as far as how these lt1 heads came out... at .650 flowed 362 exhuast at .650 no pipe 237. both ports kept flowing up to .800 lift and past.
I was always scared to over cc my intake runners being old school , would out of box these project x 215’s but cnc’d be great on 2450 lb drag only nova? Basics are I a 4.030 bore , 6 inch rod “355” 13.2 comp w64cc & .039 head gasket upgrading to a .675 lift roller & say 104 or 102 lobe separation? Or better use 200cc ? & have ported ?
Go with the 215s. You'll go faster.
Funny that these heads can flow this much at .700” or more lift but the piston isn’t moving enough to get a tenth of it without a blower. Useless with a NA engine where the first .200” of the intake opening.
Ugh. Not true. Dyno test prove this.
If 330cfm on the right build don’t make 565 something wrong. I bet he’s going into the 600z
330cfm should support 650+hp with a proper build.
280 at .500 is strong
Sucks how these companies rip eachother off, sell knockoff castings etc. Writings on the wall boys drive these while ya can.
Think FUNNEL of CROSS Section ?? ....Where is the RESTRICTION ??......Where is Smallest Cross Section in the PORT ?? Pushrod Pinch is 2.45 Sq Inch....91 % of 2.10" Valve Cross Sec - 8mm Stem Cross Sec =2.787 Sq Inchs ? Where is the RESTRICTION in CROSS Section ? ..1.24" x 2.25"= 2.79 CROSS Section.... Think FUNNEL- Manifold RUNNER to Head RUNNER too VALVE THROAT CROSS Section , Tapered Cross Sections ??.... Think FUNNEL - Exhaust THROAT CROSS Section Tapered to Header Flange , a 20% Bigger CROSS Section to 3-Stepped Primary Pipes to Merge Collector . . Cram the CROSS Section in and out - FUNNEL !!..2 Cents -
My experience were relatively the same when these heads first came out. But I had to do all the valve guides, all the valve work, surface.... nothing was right.... And after 6 months one cracked. I'm pretty sure it wasn't user error.
He came to his senses, bought afr's .
What size head and brand would you go with on turbo Ford 302(306). Street/strip In the 10 compression range. ?
PAUSE @ 7:09 and @ 7:54 to see the man inside the far left port, with sun glasses on and a leather jacket with a crew cut.
I used the afr gaskets on mine, fit perfect. How odd.🤔 Also, had to weld the hell out of holley stealth ram to make the combo fit
What if you done a straight vein on those odd intake ports? Does the vein looks like it causes the air to turn the wrong direction when it’s coming into the chamber. What if you made that vein straight and leave the other two alone? Just a thought.
What do you think about the cnc version of the Dart Pro 1 227 head?
Nice looking head you got there hey I was wanting to ask you when you go with them 208s or two tens like that on the valves do you got to use offset rockers on them also
My spidey senses were tingling… “Posted 5 minutes ago”
Eric Weingartner, that is some fine looking work!
Where is your shop at if I ever need to have some work done I live in Ohio
If your fighting the casting on the pushrod side for area? Why not narrow the center divider further? I'm curious about the AFR valves of the present day. I know your pretty much a "Drag Racer" so full power applications are under 20 seconds of duration o any given pass...Just curious if AFR still sources their valves from KAR valves like they were over 10 years ago when I bought my "Race Eliminator 195 CnC" heads. Me? I view my valves when I'm running stiff "Solid Roller" springs as a potential weak link in the system and am more than willing to pay the price for a known piece of quality hardware. I know you have said "Manley Valves don't flow" but, Manley is more than willing to make any head profile you desire for just a few dollars more over their catalog offerings if you need a specific head profile. We had them replicate the AFR valves years ago...We knew they were shaped like they were to enhance air flow....That 10% gain was pretty awesome on those heads but, if they would offer some with a wider spaced pushrod passage with more meat on the pushrod side? I think the flow numbers could be made far better. Why wouldn't you send a sample to Brodix to mold and make cores from and get some heads sourced from the USA that will allow you to do all that is possible with a 23 degree head?
If you make the divider too thin they do not seal. Afr has two different valves one is thicker. Afr has a parts warranty on their valves for two years. Brodix would do it but it would cost a fortune. Like 30k
Thanks for the knowledge you share. You have made me a better porter for that I thank you
So riddle me this... let's say, on this head for example (or ANY tight pinch SBC head) you were to machine the guide hole and move the pinch over as much as you could, how much could be gained?
Obviously besides the expense and needing offset rockers and lifters.
I do that on my brodix dragon slayers. You gain a lot only if you turn more rpm.
Me gustaria ver unas mejoras en las promaxx projec 185cc
what is the now C.C. of the intake ports? when ported like here is typically just few more?
235cc
Mercy that's good work
I've been hearing good things about the Promaxx heads. I'm not sure what the total cost is but those will work very well.
Thanks for sharing keep up the good work Eric
Bulshit blows in all directions! 20 years ago these were the worst aftermarket head. And 20 years later I bet they still are.
185 cc pro max projec x p
Ported
Awesome information as always.!
Pretty darn good job there Mr. W
Eric Weingartner, did the air speeds drop much when u ported these heads?
If you talking about local velocities I didn’t measure them. If average I can calculate that because I know the size.
The hole in the top of the intake past the push rod pinch point , what is that hole for or from?
Rocker stud bolt hole. That’s normal
So once again let me ask about a 350 cid engine. Pump gas 9:1 engine, with these heads. Would it be a dog until upper rpms?
Imagine these with a 350cid, lots of rpm and turbos.
Maybe a 4.040 bore and 3.875 stroke 397cid high rpm setup shaft rockers.
Now let me ask, can you do a dart cast iron version with these flow numbers. I’m really not a fan of aluminum.
He doesn't do cast iron porting ,, watch a few you'll hear it
You can get pretty big flow out of iron Pro Topline heads or RHS heads as they later became. Good luck finding them these days tho. Iron EQ heads from years back also worked well.
@@Levisnteeshirt1 I’ve bought both of the cylinder head dyno test books. Probably still go with some big dart 215’s or 220 heads. Gotta have the compression to make them work. Maybe even a set of aluminum heads. These numbers are for big hp! Gonna buy the big block book next.
Promaxx’s website offers a cnc version for a little extra $, Do you think their cnc work is able to flow close to these flow numbers ?
There 215cc no but they now offer my port that is 235cc that is what this head is.
@@WeingartnerRacing You know where I could find them? I was just checking out their website and seem to can’t find the 235’s
@@LilRay.18 me. You can purchase them from me.
What was total cc of ports after all work done?
238cc
What did the area of the throat end up being?
91.3%
Eres genial
Curious to see what the vane done to the swirl numbers. Thanks for the videos.
Decreases it
@@WeingartnerRacing Wow I was guessing otherwise.. Is the purpose is to direct the fuel charge in the correct spot in the chamber wall?
That head looks alot like a brodix casting
Not even close the chamber is very different
The Promaxx Maxx series do.