Re: SB Edelbrock LA heads 304cfm@.600"
[Re: W5DART66]
#1003468
06/01/11 10:03 PM
06/01/11 10:03 PM
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Joined: Jun 2003
Posts: 9,225 Charleston
sixpackgut
Drag Week Mod Champion
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Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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mopster, nice work I am curious as to what the Indybrock port looks like. mopsters ports look like alot of work when you can just use offset rockers and lose the pushrod pinch but i have never seen a picture of the port and would like to if someone could share
Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: SB Edelbrock LA heads 304cfm@.600"
[Re: mopster]
#1003469
06/01/11 10:03 PM
06/01/11 10:03 PM
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Joined: Oct 2004
Posts: 1,752 detroit area
moderncylinder
top fuel
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top fuel
Joined: Oct 2004
Posts: 1,752
detroit area
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the epoxy in front of the guide will create an "anti" swirl to the natural pattern of swirl natural to the valve placement/position... ls motors have that cast in,,, you can get turbulant airflow, or air disconnecting from the short turn and the vane,, or a particular type of valve job will help the air stay connected as valve lift goes up. everyone has seen air get turbulent or a head loose airflow as lift increases,, what he did with the epoxy will help that not to happen,, and for the head to continue to gain as lift increased
putting more short side on the head with epoxy is not a bad idea..
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Re: SB Edelbrock LA heads 304cfm@.600"
[Re: mopster]
#1003474
06/02/11 10:56 AM
06/02/11 10:56 AM
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Joined: Mar 2007
Posts: 3,300 Northern Indiana
Dunnuck Racing
master
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master
Joined: Mar 2007
Posts: 3,300
Northern Indiana
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Looks like you did a lot of work developing what you wanted.I,for one,can appreciate the need/want to do things yourself. Please,keep us posted on the rest of the build! Keith
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Re: SB Edelbrock LA heads 304cfm@.600"
[Re: Dunnuck Racing]
#1003475
06/02/11 12:12 PM
06/02/11 12:12 PM
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Joined: Jan 2003
Posts: 9,924 Weddington, N.C.
Streetwize
master
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master
Joined: Jan 2003
Posts: 9,924
Weddington, N.C.
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Nice work and I have no doubt your numbers are good judging from the amont of work I see in the shots. Also you have your base numbers for comparison which always make it easier to compare flow numbers to other benches. What has always been interesting to me is hardly anyone talks about wet flow and that if you consider a (for example) 12:1 A/F ratio at 300cfm, 7.6 or so percent (or 23 cfm of that 300) is displaced by the Liquid Fuel in suspension and fuel doesn't always act or swirl around in the port exactly the same way that air can or does. Also everyone understands say 300 CFM for port comparison but how many think about that intake valve being shut for around 2/3'rds of that minute? Even the more we know, we still learn more from "cause and effect." I've seen similar epoxy mods that picks up the airflow big on the flow bench but don't always correlate to a proportional increase in power. Also a port that doesn't work well with a carb may work extremely well with port injection (related to that very reason). Ryan said something very insightful (I'm paraphrasing) that he doesn't neccessarily concentrate on the flow on the bench so much if you know from experience where to port to pick up the power...in the end that's really the bottom line becuase nobody races flowbenches Take your intake duration at .050 and divide that by 720, take that fraction and multiply it by 60, that's how many seconds per minute your intake valve is actually open....and Unless I missed something that is constant regardless of RPM i use this to compare 2 cams @ .050 and .0200 becuase it gives you a 'real world" relative percentage comparison from one to the other.
Last edited by Streetwize; 06/02/11 03:08 PM.
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Re: SB Edelbrock LA heads 304cfm@.600"
[Re: Streetwize]
#1003476
06/02/11 12:36 PM
06/02/11 12:36 PM
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Joined: Jan 2003
Posts: 5,487 SoCal
Brian Hafliger
master
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master
Joined: Jan 2003
Posts: 5,487
SoCal
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Thanks alot for the pics. I'm doing a pair right now and I'll post pics of mine this weekend...they are right at 302cfm at .650. It's just fun to share...that's what this site was all about a few years ago... Brian
Brian Hafliger
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Re: SB Edelbrock LA heads 304cfm@.600"
[Re: moderncylinder]
#1003482
06/05/11 04:07 PM
06/05/11 04:07 PM
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Joined: Aug 2003
Posts: 1,314 Charlotte, NC
LSP
pro stock
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pro stock
Joined: Aug 2003
Posts: 1,314
Charlotte, NC
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Quote:
ive done magnum heads that are for super stock, 180 cc int runner, 2.020 valve,,, flow 285-290,, on a .060 over 360, 12/1, fuel injected make 685hp,, guy just set the record in ss/ia this past weekend,, in a 3200lb car or so went 9.62 at about 85% throttle,, ran high 9.40's at 3300lbs at 100% throttle
Nice job, are intake port and bowl in the Edelbrock Magnum head similar at all to the Mopar Magnum RT iron head?
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Re: SB Edelbrock LA heads 304cfm@.600"
[Re: mopster]
#1003484
06/08/11 01:34 AM
06/08/11 01:34 AM
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Joined: Jan 2003
Posts: 5,487 SoCal
Brian Hafliger
master
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master
Joined: Jan 2003
Posts: 5,487
SoCal
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Quote:
OU812, Iīm looking forward to see your work.
Here's some pics...
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