Not sure but check Jegs website or ProMaxx.

Ok

Curious if you have any flow data?

Or does anyone else?

I hear crickets.

Chirp, chirp, chirp...

did you see the first post in the thread???

Lol...thus the crickets! No I came in late and never clicked back far enough.

Okay, done being stupid now.

He picked them up over a week ago and finished striping them down. He said all the other valve guides felt great. Not thinking that the engine will be together this year as he has SEVERAL projects going like most of us do.

Any updates??

Will you please elaborate on what you mean by this?

I guess this question was pointed towards me about exhaust port air speed? If so the average head porter has a desired ex port shape that we aim for. Most ex ports when on a bench are very loud with turbulence in an unported state. When I took a 2 day "theory' class given by Darrin Morgan (google the name) Very little time 1 1/2 hours out of 17 hours was spent on the ex side. Most of us had flowbenches and access to checking port speed so his short lecture on the exhaust side was to properly size the throat to the proper size of the valve being used, bell-shape the port, make the exit as big as possible (without getting carried away) and DON"T just concentrate on ex flow. He was more worried about "airsppeed" than he was about flow number. He gave us a speed number to aim for on the exhaust side (I'll just say OVER 300fps) and it has paid off for me well in testing. I can't get into a discussion on why he told us to do this but like I said, it works. This is exhaust side only. He gave us a number to stay UNDER on the intake side.

I guess this question was pointed towards me about exhaust port air speed? If so the average head porter has a desired ex port shape that we aim for. Most ex ports when on a bench are very loud with turbulence in an unported state. When I took a 2 day "theory' class given by Darrin Morgan (google the name) Very little time 1 1/2 hours out of 17 hours was spent on the ex side. Most of us had flowbenches and access to checking port speed so his short lecture on the exhaust side was to properly size the throat to the proper size of the valve being used, bell-shape the port, make the exit as big as possible (without getting carried away) and DON"T just concentrate on ex flow. He was more worried about "airsppeed" than he was about flow number. He gave us a speed number to aim for on the exhaust side (I'll just say OVER 300fps) and it has paid off for me well in testing. I can't get into a discussion on why he told us to do this but like I said, it works. This is exhaust side only. He gave us a number to stay UNDER on the intake side. [/quote]


Hmmmmm,

Just read an article with John Kaase on a hemi/wedge head competition.
Had interesting info on intake to exhaust port ratios or more correctly the lack of its importance for max power.

Funny thing was the hemi exhaust anialated the wedge but that was not the reason given thst it won the competition.

https://www.google.com/amp/www.hotrod.co...-dyno-test/amp/

Is this kinda the technique you would use?

I found these vids on short turns and exhaust porting.



He actually uses emery cloth to finalize the short turn radius.

And here he goes to town hogging out a BBC blower application.
2nd vid of 3 after this one...



Seems like good info.

Did a search for Darrin.

Reher-Morrison is about 40 miles from my house.
A guy at work just dropped an engine in his S-10 that was built by them.
It's a NOS motor.

$995 for a seminar.


https://www.facebook.com/darin.morgan/posts/10210628944712720

I went to the one in Columbus Ohio years ago and stayed overnight at the Holiday Inn where the class was. I called him ahead of time and asked Darin if the class wasn't full if I could bring my Son Matt along for half price. his answer was Hell yaaa" as he loved to see the younger crowd learn how to port heads.

That is VERY cool of him.

I noticed in the comments section of the above vids I posted this.

"
I know the point your trying to make, and I have taken it guy, I just hate it when people try to defend those dam companies that don't give a dam about anyone's engine after they paid all there hard earned money. It is all about getting the right port for the right CID, Cam, vehicle weight (that has a LOT TO DO WITH IT) Carb and other things. The right speed in FPS for the right Weight and valve size is the game."
Headbytes Porting3 years ago
One more time, FLOW NUMBERS DONT MEAN CRAP, if you ask any of the top cutters in the US, they will tell you that they hardly turn on the bench (Mondello, Vizzard, AL Neil, so on), and that they only put the head on there for peoples "Bragging Rights". They found out years ago that the numbers off the SF-600 don't take into consideration the fuel mixed in with them. Now on the exhaust it is different, and COULD help there but once again, it is more about CSA, line of sight, expansion rates. "
Headbytes

I see now why you talk about speed and monitor it when you port heads.
I've been out of this for so long, hope I have another 20 yrs in me to play with it.

When I left I was studying Vizards books and Steve Dulcich porting articles. I remember when RyanJ first posted pics of his port work. Fun to be back.
Info is a lot more freely available now. And the horsepower of cars is out of hand. LOL

Reposting pictures that were removed because of PhotoBuckets GREED.

ProMaxx Heads



DSC01420 by John Cadamore, on Flickr



DSC01421 by John Cadamore, on Flickr


DSC01422 by John Cadamore, on Flickr



DSC01423 by John Cadamore, on Flickr

More ProMaxx


DSC01424 (1) by John Cadamore, on Flickr



DSC01425 by John Cadamore, on Flickr


DSC01427 (1) by John Cadamore, on Flickr


DSC01428 (1) by John Cadamore, on Flickr



DSC01429 by John Cadamore, on Flickr

The JUNK that Edelbrock is sending out the door.



DSC01430 by John Cadamore, on Flickr



DSC01431 by John Cadamore, on Flickr


DSC01432 by John Cadamore, on Flickr



DSC01433 by John Cadamore, on Flickr



You take your pick. I know who will be getting my money till Edelbrock gets their act together.

I'm no pro porter for sure, but but the E-brock pics you posted are horrible and no way would that would leave my station if I had my hands on em. I spent way more time on my junk than a pro would but common sense sez keep the ports nice, smooth and consistent and I pity the poor guy who doesn't know and installs em cos it sez on the box "Out of the box performance".............The Promaxx look really nice by comparison.........

Look 👀 good.

Sidewinders are supposedly the same casting,
cost LESS, and have all machine work done.
Also assembled with name brand hardware.

Helps that I can get them from a mopar specific hot rod shop which
is the reason I picked em'

Otherwise I would have went speedmaster. LOL 😂

So I'm thinking I may want a set of the Promaxx for the 416 we're building for Dad's Duster...Would really be interested in bare castings...any advice???