Ported LS1 Heads- Actual Flow Numbers?
07-02-2002, 03:26 PM
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Ported LS1 Heads- Actual Flow Numbers? Usually when I see ported LS1 Heads from any of the companies that doing porting, I see them descriped as Stage I,Stage II,or III, etc.
Does anyone have actual flow numbers?
The data presented in a chart style would help greatly (CFMs vs. Valve Lift)
The reason I ask is that I am trying to compare the AFR 195cc LT4 or 210cc AFR Heads to ported LS1 Heads.
I would say the AFR 195cc is about equalivant to stock LS6 heads as far as flow (more or less)
The 195cc flows 260/190 CFM at .500 valve lift.
The 210cc flows 271/198 CFM at .500 valve lift.
LS1 (stock)flow 240/175 CFM at .500 valve lift.
LS6 (stock) ???????
According to Chevy High Performance Mag. anyways.
All advice is welcome, Thanks in advance <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
<small>[ July 02, 2002, 04:43 PM: Message edited by: Andy West ]</small>
Does anyone have actual flow numbers?
The data presented in a chart style would help greatly (CFMs vs. Valve Lift)
The reason I ask is that I am trying to compare the AFR 195cc LT4 or 210cc AFR Heads to ported LS1 Heads.
I would say the AFR 195cc is about equalivant to stock LS6 heads as far as flow (more or less)
The 195cc flows 260/190 CFM at .500 valve lift.
The 210cc flows 271/198 CFM at .500 valve lift.
LS1 (stock)flow 240/175 CFM at .500 valve lift.
LS6 (stock) ???????
According to Chevy High Performance Mag. anyways.
All advice is welcome, Thanks in advance <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
<small>[ July 02, 2002, 04:43 PM: Message edited by: Andy West ]</small>
07-02-2002, 04:51 PM
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Re: Ported LS1 Heads- Actual Flow Numbers? HP-GURU,
What I quoted was the standard 195cc Head. I believe what you are quoting is the Competition Package 195cc which flows:
280/202 CFMs at .500 valve lift.
This is what I plan on getting. Price is $2,450 which is $700 more than the standard 195cc.
What I quoted was the standard 195cc Head. I believe what you are quoting is the Competition Package 195cc which flows:
280/202 CFMs at .500 valve lift.
This is what I plan on getting. Price is $2,450 which is $700 more than the standard 195cc.
07-02-2002, 06:18 PM
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Re: Ported LS1 Heads- Actual Flow Numbers? Just thought you guys may want to compare it to another car. Here is the head flow for my mitsubishi head.
http://www.binaryinc.org/images/Uploads/headflow.JPG
278cfm at .400 lift aint bad.
http://www.binaryinc.org/images/Uploads/headflow.JPG
278cfm at .400 lift aint bad.
