Flow# for dart pro1 head?230
 

Does anybody here know what the flow# are for the 230 pro1 are, I tried Darts web site but couldn`t pull anything THANKS

my dart pro 1 heads were just flowed with a mild stage 1 port job. I will e-mail the numbers if you would like.

Jerry Myers
Twinturbovette.net

Yes Jerry,would appreciate that very much,heres my email..amxzx11@webtv.net THANKS

ex-gold87: I'm curious, would you post them here as well?

:cheers:

Dart Pro 1 230's:

Lift Int Exh
.200 129 115
.300 184 158
.400 231 185
.500 271 199
.550 288 202
.600 296 205
.650 301 207
.700 308 207

Tested with a 4.155" bore, 2.08" intake & 1.60" exhaust.
28" H20

**************************************** ****
Here's the flow #'s for the Dart CNC 227's - 2.080" x 1.625"
28" H20

Lift Int Exh
.200 158 117
.300 209 149
.400 257 182
.500 293 211
.600 302 220
.700 309 226
.800 314 232

I got these numbers from Dart directly.



:cheers:

The Dart 227cc is vastly superior to the 230cc because of the altered valve arrangement. I ran them without offset rocker or lifters. Which a smart person would use. They cost about $1000 more than Pro1 200 - 230's

Vetteaddict - The posted 230 figures that 71 listed are for the rough casting. Do your heads show any signs of factory bowl blending and port contouring? The reason I ask is I ordered my original Pro1 215 cc with the optional 2.08/1.625 valves the ports actually arrived at 221 cc. I had them hand port balanced flowed.

Based on their Pro 1 215cc and Iron Eagle 230cc flow numbers I have I would estimate they would flow out of the box in the 285-295 cfm range at .700 lift. I never trust advertised flow numbers from the manufacterers own website

A cnc'd version of any of these heads vastly improves the flow at an additional cost of at least $1000 as gkull states above:D

I found a web site the otehr day with all kinds of flow data for all kinds of heads, it even has a cool calculator so you can see at what rpm you should make maz hp, i dont know how accurate it is but id like to know if someone else knows, anyways, heres the site http://users.erols.com/srweiss/tablehdc.htm