Stock flow numbers inside - LS1, 5.3l, 6.0l, and LS6
03-20-2003, 12:14 AM
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Stock flow numbers inside - LS1, 5.3l, 6.0l, and LS6 There has been alot of talk recently of stock flow numbers and how they compare to each other, so I decided to scan the flow numbers for those heads for everyone to see.
Stock LS1
Stock LS6
Stock 4.8/5.3
Stock 6.0
Some info on the tests:
-Flowed on a SuperFlow 1020 bench
-Radiused entry used on the intake; exhaust port flowed open
-3.90" bore
Jason
Stock LS1
Stock LS6
Stock 4.8/5.3
Stock 6.0
Some info on the tests:
-Flowed on a SuperFlow 1020 bench
-Radiused entry used on the intake; exhaust port flowed open
-3.90" bore
Jason
03-20-2003, 01:33 AM
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Re: Stock flow numbers inside - LS1, 5.3l, 6.0l, and LS6 GREAT info. I love it.
Any chance of getting a graph of all 4 overlaid? I know the software does it <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Any chance of getting a graph of all 4 overlaid? I know the software does it <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
03-20-2003, 01:53 AM
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Re: Stock flow numbers inside - LS1, 5.3l, 6.0l, and LS6 </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by jmX:
<strong> GREAT info. I love it.
Any chance of getting a graph of all 4 overlaid? I know the software does it <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes, it can be done. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> I'll either print it out tomorrow or just put it in Excel and do it that way.
Brett, these heads rock even more after just some minor bowl and cleanup work. The low/midlift keeps going through the roof, but still lack the upper lift cfm of the LS6. They would be an excellent street head if you can get the compression up.
Jason
<strong> GREAT info. I love it.
Any chance of getting a graph of all 4 overlaid? I know the software does it <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes, it can be done. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> I'll either print it out tomorrow or just put it in Excel and do it that way.
Brett, these heads rock even more after just some minor bowl and cleanup work. The low/midlift keeps going through the roof, but still lack the upper lift cfm of the LS6. They would be an excellent street head if you can get the compression up.
Jason
03-20-2003, 01:56 AM
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Re: Stock flow numbers inside - LS1, 5.3l, 6.0l, and LS6 Jason, if you can, I'd love it if you could get me some #'s off a GTP LS6 ported head for me compared to the ones yall sold me. I might just have to step up!
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03-20-2003, 05:44 PM
#8
Re: Stock flow numbers inside - LS1, 5.3l, 6.0l, and LS6 Thanks, just the info me and a buddy were looking for to compare my 6.0 heads to my stock 98's. I have a set of LQ4 317 castings that I'm will be using on my new 348 forged blower motor. My ATI is one way to get the compression up <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Too bad I can't find someone to clean them up for under 1000 bucks <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />
Jeremy
Too bad I can't find someone to clean them up for under 1000 bucks <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />
Jeremy
03-21-2003, 01:00 PM
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Re: Stock flow numbers inside - LS1, 5.3l, 6.0l, and LS6 Is it true that on a set of stock 6.0L heads the compression is about 9.4-9.5 if they haven't been milled?
03-22-2003, 12:36 AM
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Re: Stock flow numbers inside - LS1, 5.3l, 6.0l, and LS6 Jason,
Are the 6.0s you flowed the 317 casting number?
Any idea how much flowing them on a 4.030 bore would skew the numbers?
Brandon
Are the 6.0s you flowed the 317 casting number?
Any idea how much flowing them on a 4.030 bore would skew the numbers?
Brandon
