Flow# for dart pro1 head?230
03-30-2005, 08:13 PM
#1
Burning Brakes
Thread Starter
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
03-31-2005, 05:43 AM
#5
Melting Slicks
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.
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.
Last edited by 71coupe; 03-31-2005 at 05:53 AM.
03-31-2005, 10:10 AM
#6
Team Owner
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.
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.
04-01-2005, 09:27 PM
#7
Race Director
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
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
Last edited by MotorHead; 04-01-2005 at 09:31 PM.
04-02-2005, 12:26 PM
#8
Burning Brakes
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
