Just curious what people have.
What do your heads flow?
What kind of heads?
What kind of work done to them?
What's the motor combo and how much HP?

355 at .700. 335 at .600 i think. cam around 630 lift, 493. 12to 1

indy EZs I ported to MW size. VJ and backcut by Porter

my challenger ran 6.20s at 110 at 3500 thru full exhaust

Coleman/Arrington Craftsman Truck 15* W8, touched up by MBE....


403 @.800

417ci R3 420 intake....894hp @8200

Square port style b1-TS heads. Modern worked on them and tried to brining the flow up but there only so much that could be done with the square ports.
2.40 intake valve.
flowed 490cfm@900
636ci engine made 1150hp

Oval port b1-TS heads with much newer technology and porting. Koffles, Hemphil and a Local porter worked on them.
2.45 intake valve
520cfm @ 900
Made 1200-1250hp in our 640ci engine

Diablo... you posting that this early makes us small block guys not wanna post...lol

360@700-int, 255.5@700-ex. w9's, c&c by ryan, 440sb, est hp 700 pump gas. best 60'- 1.25. best et- 9.61.

440-1 CNC ported by MCH, 370 at .600,700 and .800. 528 C.I. motor 12.8 to 1 comp. ratio with a single Holley 1050 Dominator made 845 HP at 6500 RPM with a bad set of headers that where smaller on the flanges than the exhaust port size are The motor had a small intermittent miss from 5200 RPM on The ported B1 by Koffels flow sheets show 420s at .700,800, and .900 Not on a motor yet so no power numbers.

Not enough!!!!

INDY 245cc raised port flow all the water in my cooling system throught the ex ports in 6.30 sec.. russ said that was normal and to go [Edited by Moparts - Family Friendly Site - Keep it clean] myself

Indy EZ heads 330 @ .600 and 348 @ .700. Ron

Don't know much about mine but what I was told.

P7 Heads, 400 range, not sure on lift would guess .700
Engine as I bought it made 856hp at 9000rpm with Legal NASCAR intake and carb.

Hand ported 5.7 Gen 3 Hemi heads. 320 cfm @ .575" lift on the intake and 219 cfm on the exhaust. Port velocity was 345 fps.

My cnc'd Brewer Heads Should Flow almost 480 but I haven't had them on the bench. I'd Probably sell em if you need em.

440-1 heads originally ported by Radar at R & J from Cedarfalls Iowa. VERY pleased with the power they made originally, but got greedy and tried to improve on the original work with 2.3 valves.
Of the two plots on the chart, the lower flow plot was with 2.25 valves, one with 2.30 valves and exhaust reduced to 1.78 to make room for them. Didn't show a bit of power improvement with the bigger valves, so I may send them back to R & J and see what they can do, if anything to make use of the extra flow.

Greg...I saw your flow sheet at Radars.. If you send them back,don't be in a big hurry! He is way behind and they broke parts on the fuel car. My Victors have been there for a long time,I am getting close to sending them elsewhere. I want them done for the Mopar Max II race at Cedar Falls...

Bummer when the best guy around is swamped! Finally found the chart with the other valve flow data! (attached to previous post)

He wanted me to help him but I can never get him on the phone. You should see the pulling tractor heads that they make from scratch..Very impressive!

Mine on 2 different benches, one was Modern Cylinder Head and the other was Dwayne Porter. Modern flowed the exhaust with a tube where Dwayne did not, that is why the ex numbers vary. Heads are Indy -1's that were hand ported by Barton.


Motor made 850ish HP and is 557 cubes. Pushed my car to 9.ohs and a couple of 8 sec passes at 3000 lbs.

We're around 380 cfm @ 700 hand ported but this is on a kit type, self assembly bench (can't remember the manufacturer ) Motor makes around 850 hp, runs mid 9's @ 3850lb (W/D) so figures are probably near.