yeah,,those pesky correction factors and bsfc's are to be damned.lets just see big numbers and call it good.

I have some flow data from these particular modified 317 promaxx heads that were used on this build. I'll refrain from posting them, until I can find out if the manometers calibration has been certified and checked.

mine was calibrated, and the numbers you have Joe (Chris's) are very close to mine so I myself find it hard to believe that 2 flow benches located across 2 separate countries, hundreds of miles apart be both wrong almost to a "T"

so PHUK all ya haters out there!! remember guys like me are out there doin it while guys like you, sit ur fat assez in ur lazyboys watchin and hatin!!! don't be wearin out ur keyboards allya'lll... :lolhit::angry-smiley-038::poopoo:

Scott Foxwells flow numbers from the EQ heads, were right inline with what mine flowed, and what valako got from them as well.

But hey, lets get back to comparing ADVERISED flow numbers from AFR's website :)

well I've sold a few more than that Mike but still not anything anyone in the big world would bust a nut over!! so ya I will abide by the rules... as I don't want to hurt anyone's delicate feelings, however I am a "PAYING" member so my contribution is MORE than that of a certain other NAMELESS individual!! :angry-smiley-038:

:coolcowboy: peace be with ya'll

The AFR V2 style stud girdle fits these heads. That would be the stud girdle from the newer style AFR heads, not the older ones that had issues with rocker stud location. Afr went to the V2 updated castings a couple years ago

RUTRO,i can understand what is being said and i have no desire to get into a pizzing match with anyone involved in the thread.thanks for posting information about the 317s.you,and sb are both valued members and both post good information so stop the bs boy,s.

Glad I have real flow numbers on mine now also, learned a lot the last 2 years...

It would be GREAT if every dyno or head flow sheet had complete information, including a lie detector test from the operator saying he calibrated it, and entered accurate numbers!

Fact is they don't unfortunately. Doesn't matter anyways because it's easy to hit a number, the hard part is making them last in real offshore endurance, and that's what is lacking in this tech section. A bunch of keyboard cowboys who don't even have running boats let alone run any type of distance, poker run, race, etc. Then when their engines blow up they hide it and lie about it or make excuses. Just like the bravo guys bragging their drives last Year's but fail to mention they anchor all day at the sand bar.

Chit half the info in here is garbage. Tired of the constant name dropping without details. Like "stainless marine manifolds" OK which ones gen 1 or 3? "Callie's cranks" compstar or Magnum? "Scorpion rockers" ummm...Race, endurance?? There's so much incomplete and innacurate information I feel sorry for the newbies.

Shoot at least some people even dyno and flow their heads, and share their info right or wrong. Because those are just more tools to help succeed with a build. They are not God, they are just tools.

Overall this is a good thread let's keep the info coming!

Geeze Kev I sure hope you're not referring to me lol

care to say who you are directing this to?

Of course not, that would require taking heat

Mike STOP stirring the pot and acting like your not, gosh you love drama!

It doesn't matter if it's directed towards everyone or no one or just a few. The facts are the facts and you can't deny that!

All we can do is work together and try and make this place better, more informative, and more FUN!

Cool thread, cool heads, great info coming in about them, still better than watching Main stream media!

LOL

I take plenty of heat, I just don't bite on every minnow thrown at me like you ;-)

listen kevin,you are the king of drama,i for one am sick of your smart azz bs.you come on here like you are som big shot because you have a nice boat,well guess what, a lot of guys have nice boats so stop thinking you,s chit don,t stink.you,r post ,as most of your posts are derogatory and non specific and you really ad nothing to the tech section except DRAMA.if you have a problem with someone,man up and name that person,if not,STFU.have i made my thoughts clear enough for you to understand?

and another thing,if you don,t like the tech info that some offer up just stop reading it,i can,t remember any of your posts offering tech info,mostly bob bashing and chit like that.NOTHING FUNNY ABOUT WHAT I AM SAYING.

Fwiw, that dyno sheet posted, was not a marine build.

kevin,if you want to fuk with me bring it on,you really pizzed me off now.

Cool, still great to learn more about this new product. Thanks. For sharing.

true Joe, but it clearly illustrates the heads' ability to make good power in a low compression environment.. that was the reason I used it as reference

I agree. Just wanted to throw that out there.

OKAY OKAY!! let's stay on topic... AKRACING/PROMAXX please and thank you

Yup , that`s it. You figured it all out.

group hug OK GUYS / info appears to be solid / aint nobody called anybody anything yet

I believe I was called an azzhole.

Its ok though. I have been in my safe space all day, and a friend gave me a trophy. I feel better.

But aren't you an azzhole who only goes like 50ft to the playpen and anchors up?

Yes! We dont even get on plane. :)

I knew that 96 was on the truck!

My truck cant do 96 without the boat hooked to it. Maybe with some promaxx heads its possible thou

No wonder your oil temps are low

No, I believe you chose the better head for your application.

yes he's done the same work we do up here... mild reworking of the bowl, and yes Haxby we remove the lip and blend the chamber...

:cartman: no more questions?

Hopefully will have some numbers soon. Blower intake arrived today. I'm pretty certain Jims going to weld up the floors to optimize performance. Right now intake runner is at 340 cc. Little more than I anticipated but I'm not questioning it.

I dont think a 565ci with a roots, will mind a 340cc port at all. As long as its flowing well.

Alright...in generics....say you have a 320 port, and remove enough material from the top of the port. the short side radius, and enough to make the port uniform and slight taper, along with set the minimum cross sectional area where you want, you make a 340cc port.....do you really think even a smaller motor like a 502 is really gonna care ? In fact, it may, and probably will, make more power.

It's like when the LS motor first came out and people saw 240-260cc ports and schit themselves...until they drove them !

So, if a head porter is going into to your normal bbc heads, doing all these things and filling in the floor, as long as his all his required dimensions and shapes are transeferres, who cares if the post is +/- 10-20cc of what your head (on your shoulders) thinks ?

LOL.

Kinda sucks these 300cc 24* BBC oval port Brodix heads are so damn expensive.
Anyone notice something weird (ie: not typical) with these ?

http://image.popularhotrodding.com/f...e-manifold.jpg

im guessing the raised ports.

No doubt. Awesome.

What intake?