head flow
Thread Starter
Staging Lane
Joined: Mar 2005
Posts: 94
Likes: 0
From: San Antonio Texas
head flow Hello all....Does anyone know what the flow numbers are for the stock ls1 head in 98-99. Also how about a tuner or performance shop that does reputable head work. I would like to see around 320-340 cfm. I have a 68 mm turbo and am looking to engineer a turbo setup that will make 700-800 hp
Thanks guys
Thanks guys
TECH Enthusiast
Joined: Dec 2004
Posts: 576
Likes: 0
From: Chattanooga
Our Stage 1.5 rev2 program is almost finished and may come close to your needs. We have just finished running in the new port on the CNC machine it sure looks promising. Tony D really worked hard on this new port and it shows in the numbers it generated. Now if only I could share them with you 
I will give you teaser....317.9@ .600 with an intake port that 5cc's smaller than our old 1.5 and that is with a 2.02 valve on a 3.9 bore!!!! Stay tuned for more info.
I will give you teaser....317.9@ .600 with an intake port that 5cc's smaller than our old 1.5 and that is with a 2.02 valve on a 3.9 bore!!!! Stay tuned for more info.
Originally Posted by BrentB@TEA
Our Stage 1.5 rev2 program is almost finished and may come close to your needs. We have just finished running in the new port on the CNC machine it sure looks promising. Tony D really worked hard on this new port and it shows in the numbers it generated. Now if only I could share them with you I will give you teaser....317.9@ .600 with an intake port that 5cc's smaller than our old 1.5 and that is with a 2.02 valve on a 3.9 bore!!!! Stay tuned for more info.
I will give you teaser....317.9@ .600 with an intake port that 5cc's smaller than our old 1.5 and that is with a 2.02 valve on a 3.9 bore!!!! Stay tuned for more info. TECH Enthusiast
Joined: Dec 2004
Posts: 576
Likes: 0
From: Chattanooga
Originally Posted by matts22
Is that just for the 5.7's or is there a new port for the 5.3L heads as well? Can hand finishing still up these even farther? If so, those might be some impressive results, especially for the dollar.
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If you don't post flow numbers here (which I'm sure you will), could you pm them to me? Also, I would like to know, how much more flow do you think the hand finishing to comp level actually adds throughout the flow range (.100 to .600)? Thanks Brent, I'm really looking forward to some results!
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Verdad Gallardo TECH Enthusiast
Joined: Dec 2004
Posts: 576
Likes: 0
From: Chattanooga
Originally Posted by matts22
If you don't post flow numbers here (which I'm sure you will), could you pm them to me? Also, I would like to know, how much more flow do you think the hand finishing to comp level actually adds throughout the flow range (.100 to .600)? Thanks Brent, I'm really looking forward to some results!
Originally Posted by BrentB@TEA
I will post up details as soon as the rest of testing is complete. As for our hand finished to a competition level option... We will have to do one of the new heads to see how it ends up before I could say. I should have results within the next day or so.
