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-   -   Promaxx 320 flow numbers (https://www.offshoreonly.com/forums/general-q/343853-promaxx-320-flow-numbers.html)

Rookie 02-14-2017 08:28 PM


Originally Posted by MILD THUNDER (Post 4529151)
My truck cant do 96 without the boat hooked to it. Maybe with some promaxx heads its possible thou

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

adk61 02-15-2017 07:52 AM


Originally Posted by SB (Post 4528816)
Okay, so he's done some work. Has he posted the flow sheet on those ?

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...

adk61 02-20-2017 11:10 AM

:cartman: no more questions?

getrdunn 02-21-2017 02:04 PM

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.

MILD THUNDER 02-21-2017 03:30 PM

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

SB 02-21-2017 05:06 PM

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.

SB 02-21-2017 05:31 PM

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

mike tkach 02-21-2017 06:19 PM

im guessing the raised ports.

getrdunn 02-21-2017 06:55 PM


Originally Posted by mike tkach (Post 4531188)
im guessing the raised ports.

No doubt. Awesome.

getrdunn 02-21-2017 07:02 PM


Originally Posted by SB (Post 4531165)
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

What intake?


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