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Discussion Starter · #1 ·
The shop by me would like to see some proof that gte heads are capable of flowing that much.
 

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Discussion Starter · #7 ·
SteelCitySupra said:
it can be done... some people/companies i know say it isnt possible. But i have seen a shop put out close to 310cfms at 400 lift.
hmm i have heard rumors that different benches show different results. I don't know how they work but the porter who i spoke to does some of the work for a few of the top supra guys and he can't get more than 280-290 out of one. He has been doing this work for 25 years and the shop is highly reputable and has been around for a very long time. What else was weird was that i have seen people post stock flow numbers that were better than a mildy ported head. That just doesn't make sense to me.
 

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You should consider who you're talking shit to before grilling someone like that. Sushi probably knows more than 99.5% of the people on this forum about the 2JZ motor including the headflow numbers which he's done on my head as well as a few others. He was just kidding and was probably going to post a sheet before he read your dumbfuck answer.

bdekoning said:
shut the fuck up unless you can post something relevent
 

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silvino said:
Is there even a useful set of cams available that would take advantage of a head that flowed well at .400 or .500 lift?
yeah, drag cams. the cam won't be your biggest problem, you can get that custom ground anyway. the size of your buckets is your limiting factor when trying to get lift near .500".
 

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I believe Peter Blach posted his SHP (now AutoBanh) ported head flowed 295 cfm at .400 lift with HKS 272 cams and 1 mm oversize valves. This is one of the better numbers that I recall. Embarrassingly, I can't remember my own numbers from the work Port Flow did on my head many years ago, but Peter's 295 cfm seems damn good to me.

Sil, the work on your head was real good also as I recall. Do you have any numbers you care to post although, like me, it appeared, from the pics and descriptions I recall, to be more velocity-based rather than maximized outright flow?

Ken.
 

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I got the flow numbers using the same bench from SHP, West Coast cylinder, and my local guy. One customer with SHP and another customer with West Coast, both were told 300+ at .400. Not even 290 @ .500 when we tested.

"it can be done... some people/companies i know say it isnt possible. But i have seen a shop put out close to 310cfms at 400 lift." There is this guy from Chicago that is quite the salesman.
 

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Indeed mine was inteded for more street use than a full blown port job for a serious drag motor or some such. I admit I didn't need to get the oversized valves but what's done is done.

Here's link with my flow sheet and pictures. The flow tests were done with intake (stock) and exhaust (RPS, regular) manifolds ON.

http://www.silvino.net/gallery/categories.php?cat_id=4

KenHenderson said:
I believe Peter Blach posted his SHP (now AutoBanh) ported head flowed 295 cfm at .400 lift with HKS 272 cams and 1 mm oversize valves. This is one of the better numbers that I recall. Embarrassingly, I can't remember my own numbers from the work Port Flow did on my head many years ago, but Peter's 295 cfm seems damn good to me.

Sil, the work on your head was real good also as I recall. Do you have any numbers you care to post although, like me, it appeared, from the pics and descriptions I recall, to be more velocity-based rather than maximized outright flow?

Ken.
 

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Cool. Thanks, Sil. I remember HeadGames, in another thread, saying that total, outright flow was not necessarily the goal. He said he had done heads for Bullish that had huge flow numbers and the cars weren't as quick or as fast as he thought they would be. Obviously, he didn't go into detail, but he did allow that his velocity-based porting that had less outright flow was the approach he believes works best, especially for high performance street cars, and that intake air velocity and cylinder filling were key to a good head. BLK MGK had his head done by HeadGames. Maybe he'll see this thread and chime in.

Ken.
 
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