True, true.
He said most of his customers buy cheap heads from summit.
Then the spend another chunk putting better parts in them.

And of course porting and flowing.

I have been charting numbers that I have stumbled on.
It will be interesting to see if the trend on my head matches what I have found.

Funny thing, this head porter lives 5 minutes from my house.
And he has a big shop in the back yard, does all his work there.

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Hyper_pak

I found my head flow info and (tried to) PM it to Rick a few hours ago. I would like to know what a stock "447" peanut head is good for.
My results were done on John's flow bench at 10", and was either cyl 3 or 4.
I have a thread here buried a few pages back in the "engine" section here, about my build//, skip the "war and peace" and go to the next to last post in the thread and my results are there. That's with the SI oversize valves after I made all the iron dust. I had that head shaved 70-thou and got the chambers to 49-50cc's. My first attempt at porting a head that I hope " counted" as prior to that is played with a couple of heads deemed scrap, due to having cracks in them. Those weren't /6 heads though. And I never had either of those flowers them either. I know I was in pins and needles as the " band sawed head" seemed to be resurrected and posted right around the time I did the head whose results were shown in that engine rebuild thread.

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Hyper_pak

Thanks for highlighting that to bring it back up, wish I knew how. I've recently had a few people asking me for that flow info. I also wish I knew where that head started at, when it was as cast from the factory

No problem.
I found a set of numbers from DT also searching for flow numbers.
I used a formula to convert your 10 to 28 inH2O also and put that in my matrix.
Just seeing what trends are across all the data is interesting.

I have that old head that had a compression problem still here.
I might put the 1.88 or 1.81 (don't remember) intake and 1.5 exhaust valves back in number 3 or 4.
I will take it to the porter when I pick up my other head and see what it flows.
If he doesn't charge me too much....
He told me the other day, I don't need any more work.
He was doing me a favor in his spare time.

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Hyper_pak

Ixnay on the second head to the porter.
He called me a minute ago about the bottom row of intake exhaust studs.
Said he was 40 minutes in and still had not flowed any air.
He said if it was a SB chevy he could have done 2 sets of heads by now.
I am thinking this is the first and last of flow work by him.

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Hyper_pak

Ixnay on head number 1.
He does not have a bore adapter small enough for my small chambers.
He has 4.0 and up and it over laps with head bolts and adjacent chamber.
Crap, I was looking forward to the data.

No good deed goes un-punished.
Whatever that means.

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Hyper_pak

This is easy. Just drive up to John's with your heads, and I'll meet you down there with your 198 crank.

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Official Cookie and Mater Tormentor.

Easy?!?
You are a nut case!

John has everything in storage now anyway.

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Hyper_pak

It would be easy for me.

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Official Cookie and Mater Tormentor.

Nut Case? For sure!! All of us are!

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6

Hey it was easy for me too.
And while I don't have a head that needs flowed/ evaluated right now (my own excluded, nevermind) I hope to run into him at the Indy swap coming up ..

So which era of cylinder heads are these numbers coming from? There is a least 4 different castings done over the years and I have a head from each era.

1) I have a 1963 head with the first generation of the chamber design. The ports neatly match the gasket and the runners have a nice flow to the valves. This may be a fluke, or the myth that yellow engines are better then red engines is true.

2) I have a version from 1974, but it is currently setting on top of the engine of our Duster. So I can't say how well it was casted.

3) I have a couple of heads from the 1976 - 1979 era. The runners need to be gasket matched and there is a definite difference in the port runners from the '63 head.

4) I have a head from 1980 and beyond. Once again they need to be gasket matched and the runners are designed differently from the others.

There must be a reason for the port runner changes. Is one era better then another?

I think my head is the "169" head and that is what Mike asked me to send for porting if I had one.

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6

169 is a drool tube head, 67 to 74, with the chamber wall stood up more vertical than the earlier head.
On the spark plug side.
That chamber shape is better, I agree with Mike.

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Hyper_pak