my single port Flow #s

**700hpv6** · 12-10-2006, 05:05 PM

well i never did post the Flow #s from my weak single ports. soo here is da #s.

Intake-1.84 intake valve
.050-49.7
.100-85.7
.150-138.9
.200-168.5
.250-199.2
.300-216.4
.350-236.8
.400-251.0
.450-268.3
.500-278.7
.550-287.4
.600-294.0
.650-304.6
.700-312.1

exhaust-1.575

.050-34.2
.100-48.1
.150-71.0
.200-99.2
.250-124.1
.300-151.4
.350-178.9
.400-204.7
.450-222.1
.500-234.8
.550-248.0
.600-259.7
.650-264.1
.700-266.7

slvr2000stang · 12-10-2006, 05:14 PM

Weak is right, don't those out flow any split port heads out there?

**700hpv6** · 12-10-2006, 05:24 PM

Quote:

Originally Posted by slvr2000stang

Weak is right, don't those out flow any split port heads out there?

lmao they sure do.

but thats only untill we put the big valves in your heads.

cobra232 · 12-10-2006, 05:35 PM

holy ****

**mysteed** · 12-11-2006, 04:25 PM

yeahhhhhhhh. Dem boys flow just fine.

supramkivtt2jz · 12-12-2006, 01:57 PM

gha. insane numbers.....

heres RPM's comparison...

single port:
210cfm @ .550" lift intake
157cfm @ .550" lift exhaust

split port:
258cfm @ .550" lift intake
153cfm @ .550" lift exhaust

thats amazing..... no wonder you push so much to the ground

can delk do that for every customer?

**700hpv6** · 12-12-2006, 08:02 PM

Quote:

Originally Posted by supramkivtt2jz

thats amazing..... no wonder you push so much to the ground

can delk do that for every customer?

yes we will try. i hope to get these heads out on the market soon.

**mysteed** · 12-12-2006, 10:22 PM

Matt, how much can you port and polish a set of splitport heads and about what would it cost?

**700hpv6** · 12-13-2006, 06:04 AM

Quote:

Originally Posted by mysteed

Matt, how much can you port and polish a set of splitport heads and about what would it cost?

we are working out a price. soo i will have to get back to you about that.

Jarrell · 12-13-2006, 06:05 AM

Cool I may have to contact you this summer.

Excellent numbers.

**mysteed** · 12-13-2006, 07:11 AM

Quote:

Originally Posted by 700hpv6

we are working out a price. soo i will have to get back to you about that.

That's cool. I just have the feeling that I might need some better flowing heads by summer.

Stangcharger3.8 · 12-13-2006, 07:46 PM

very nice Matt.

very few people make me jelous but you do it quite often.

dapack69 · 12-13-2006, 08:19 PM

Quote:

Originally Posted by mysteed

That's cool. I just have the feeling that I might need some better flowing heads by summer.

Hold on to your heads. I'm going to send one of mine up to see what it flows on that bench. That way we can compare my current numbers to those.

supramkivtt2jz · 12-14-2006, 05:14 AM

Quote:

Originally Posted by dapack69

Hold on to your heads. I'm going to send one of mine up to see what it flows on that bench. That way we can compare my current numbers to those.

his flow numbers are basically saying you can stick your head in each port

tomzac · 12-14-2006, 08:38 AM

Quote:

Originally Posted by supramkivtt2jz

heres RPM's comparison...

single port:
210cfm @ .550" lift intake
157cfm @ .550" lift exhaust

split port:
258cfm @ .550" lift intake
153cfm @ .550" lift exhaust

Are these the best numbers for the splitport?

**mysteed** · 12-14-2006, 11:15 AM

Quote:

Originally Posted by dapack69

Hold on to your heads. I'm going to send one of mine up to see what it flows on that bench. That way we can compare my current numbers to those.

Yeah, but I'm running a splitport setup now Keith.

supramkivtt2jz · 12-14-2006, 01:50 PM

Quote:

Originally Posted by tomzac

Are these the best numbers for the splitport?

its what rpm advertises. id advertise my best if i were trying to sell something...

defrag010 · 02-24-2009, 02:13 PM

going to bump this one up, I'm interested in how you got that high of a number with the limited CSA and floor radius through the factory short turn.

What bore size did you flow these on? What was the runner volume after the port work? Did you flow the port with no valve to see how efficient the design of the port by itself is?

The reason I am interested, is that the short turn in the factory castings is not very good (very small radius) and the bowls are very deep.. and for even the most efficient short turn (Pro-stock head, ~115 cfm/in^2) there would need to be 2.71in^2 of CSA across the short turn to get your numbers. Did you raise the roof to get that CSA? I've been widening the walls at the short turn to try and get more CSA, but I'm ~.030" from breaking through on both sides and it's nowhere near 2.7 in^2.

Also, the best of the best cfm/in^2 of valve area that the best head porters are getting with aftermarket head castings of the 13-15 degree type (similar angles to 3.8) is roughly 100-105cfm/in^2 at a lift/diameter ratio of .3. Your numbers work out to be 108 cfm/in^2 at .3 lift/diameter, so I'm wondering how you reconstructed the intake ports (especially the bad port) to get that efficient of a port. Numbers like these are unheard of with any type of factory casting.

norstang · 02-25-2009, 09:21 AM

Read post #94

Enjoy, long thread but worth it

defrag010 · 02-25-2009, 11:13 AM

I read both of those, but didn't see anything about the authenticity of the head flow other than a few people making some wise cracks about 300cfm..

**greensteeda** · 02-25-2009, 01:43 PM

Quote:

Originally Posted by norstang

Read post #94

Enjoy, long thread but worth it

Quote:

Originally Posted by defrag010

I read both of those, but didn't see anything about the authenticity of the head flow other than a few people making some wise cracks about 300cfm..

I understand the spreading of how Delk sucks and what not but IIRC Matt did his own work on those heads and motor. I wouldn't dismiss them as a "Delkism" yet.

P.S Please keep this on topic and not spin it into an "I hate Delk" thread. Thanks

defrag010 · 02-25-2009, 02:47 PM

Basically, what I'm getting at is that there is not enough cross section in the factory intake ports to support that CFM with that size valve on single port heads. That's on the good port too, the bad (middle) port is alot worse. Basically, to get those numbers with that valve size someone had to have ground out the whole factory port in the head and somehow created a smaller SB2 or pro stock intake port inside the factory casting. The stock ports are not efficient nor large enough to support that much flow.

The flow numbers listed on these single port heads are about 108 cfm per square inch at a .3 lift/diameter ratio with a 1.84" valve.. to put it into perspective, a heavily ported Brodix 265cc 18 degree chevy head only flows 102 cfm per square inch at .3 lift/diameter..... and there is no way a stock ported 3.8 intake port is more efficient than a Huge ported brodix intake port.

slvr2000stang · 02-25-2009, 03:44 PM

Quote:

Originally Posted by greensteeda

I but IIRC Matt did his own work on those heads and motor. I wouldn't dismiss them as a "Delkism" yet.

P.S Please keep this on topic and not spin it into an "I hate Delk" thread. Thanks

Matt had those heads ported by the same guy that did mine. I know I sent the heads to the guy for Matt.

**greensteeda** · 02-25-2009, 03:47 PM

Quote:

Originally Posted by slvr2000stang

Matt had those heads ported by the same guy that did mine. I know I sent the heads to the guy for Matt.

I see. I guess I misread where he said he built the motor. Nothing was said about him doing the port work. Thanks for the correction

slvr2000stang · 02-25-2009, 06:24 PM

No problem. I hope everyone contributes to the head flow off.

defrag010 · 02-25-2009, 07:35 PM

I have access to a flow bench right now every day until the end of June, if people would cover shipping I wouldn't mind doing a head flow-off. Bench is a superflow 600

Flex · 01-17-2010, 08:36 PM

Out of curiosity, were there ever any pictures or flow bench numbers posted for these heads?

**700hpv6** · 01-19-2010, 06:13 AM

i know there is some pics around v6p and i also posted the flow numbers i got from the heads at a local shop. just search v6 for Matthewneuharth.

also i did the port work on my first set of heads with the stock ford valves. i went 9s on those. i didn't do the port work on these heads.

i did build me engine.