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Head flow |
Post Reply | Page 123 8> |
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amccar
AMC Apprentice Joined: May/27/2009 Location: Tennessee Status: Offline Points: 162 |
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Posted: Feb/02/2010 at 10:03am |
What is the flow limit for factory type heads without epoxy?
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SKeown
AMC Addicted Joined: Jul/30/2009 Location: Texas Status: Offline Points: 3085 |
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I've heard a number of claims of 305 cfm, but also hear from experienced head porters that it's not really happening?
SKeown
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amccar
AMC Apprentice Joined: May/27/2009 Location: Tennessee Status: Offline Points: 162 |
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There is a guy on E-Bay that is claiming 362cfm done without epoxy by Dean Turk. Has anyone heard of this Dean Turk?
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DragRacingSpirit
AMC Addicted Joined: May/27/2009 Location: Mo Status: Offline Points: 903 |
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I would believe it when I see the numbers on my head porters flow bench. Before that I will say bull.
I have never personaly seen an AMC casting flow 300cfm let alone that number being thrown out there. The ported set of AMC castings that I used to run flowed in the 260-270 ish range if I remember right but they did not have any epoxy in them and were not radical or anything by any means.
I have seen an Indy SR head flow 345 ish CFM but that is after a LOT of work and the ports opened up as much as possible to 260cc of intake volume. I have never had the 401-1 head or the CNC versions on a flow bench so I only know what Indy claims on those. Edited by DragRacingSpirit - Feb/02/2010 at 11:26am |
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Best 1/4 mile 8.99, 1/8 mile 5.71, 60 foot 1.27, no power adders
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amccar
AMC Apprentice Joined: May/27/2009 Location: Tennessee Status: Offline Points: 162 |
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Thank's guys. That is what I thought. My heads have some work done to them and they do not come any way near that.
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tsanchez
AMC Addicted Joined: Jul/09/2007 Location: Arizona Status: Offline Points: 4302 |
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billd
Moderator Group Forum Administrator Joined: Jun/27/2007 Location: Iowa Status: Offline Points: 30894 |
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There are some head flow specs posted here if that helps any...........
Also keep in mind, like other measurements, they might be using different pressures or criteria. Ken Parkman is a guru on that stuff, probably Steve P as well......... (Not that DRS isn't so no offense!) |
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SKeown
AMC Addicted Joined: Jul/30/2009 Location: Texas Status: Offline Points: 3085 |
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Ken P. tested mine right at 280 and Hurst390's are supposed to be 290 or so.
SKeown
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steeters
AMC Addicted Joined: Feb/02/2008 Location: California Status: Offline Points: 895 |
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Hurst390 has one of the faster NA factory head motors out there. You can probably figure out about what it flows (Barry Allen ported) based on mph?
Heck, he might even tell you what they flow.
STeve
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DragRacingSpirit
AMC Addicted Joined: May/27/2009 Location: Mo Status: Offline Points: 903 |
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His Spirit and mine ran real close to the same ET when I last had my car running.....and last time I had my race car running my Indy SR heads were flowing in the 315 range on the intake side. Edited by DragRacingSpirit - Feb/02/2010 at 1:37pm |
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Best 1/4 mile 8.99, 1/8 mile 5.71, 60 foot 1.27, no power adders
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