Head selection
03-27-2007, 05:42 PM
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Head selection I decided to scale back on the cubes a little and go FI on my build. What heads would you recommend for a 427ci / Vortech Ysi build?
03-28-2007, 11:04 AM
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Originally Posted by 2001WS6Vert
What cubes were you before if a 427 is downsizing?
I am suprised to hear 225cc heads. I would have thought they were too small. What about an ls7 based design, ETP, LS7, L92, etc.?
03-28-2007, 11:15 AM
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LASTLS1 is running the ETP LS7's on his TT 408 and his set up is stout, GM LS7s wouldnt be bad either those things flow like crazy wtihout even porting them
03-28-2007, 11:47 AM
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That is what I was thinking. How about the Livernois CNC ported L92's> They flow great as well and are very reasonably priced. I need to get fuel rails and injectors anyway, so swapping to a L92/l76 would save money and outflow an Ls2 setup.
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03-28-2007, 12:47 PM
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Originally Posted by john_sblendorio
That is what I was thinking. How about the Livernois CNC ported L92's> They flow great as well and are very reasonably priced. I need to get fuel rails and injectors anyway, so swapping to a L92/l76 would save money and outflow an Ls2 setup.
03-28-2007, 02:45 PM
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Originally Posted by john_sblendorio
That is what I was thinking. How about the Livernois CNC ported L92's> They flow great as well and are very reasonably priced. I need to get fuel rails and injectors anyway, so swapping to a L92/l76 would save money and outflow an Ls2 setup.
You really can't go wrong with our L92's. The flow numbers speak for themselves in terms of bang for the buck. PM member " ZLEEPER " on here. He is currently assembling his build with a pair of Livernois L92's.
Chad @ Livernois Motorsports
03-28-2007, 06:27 PM
#13
Originally Posted by SSilverSSurfer
LASTLS1 is running the ETP LS7's on his TT 408 and his set up is stout, GM LS7s wouldnt be bad either those things flow like crazy wtihout even porting them
03-28-2007, 06:30 PM
#14
Originally Posted by john_sblendorio
That is what I was thinking. How about the Livernois CNC ported L92's> They flow great as well and are very reasonably priced. I need to get fuel rails and injectors anyway, so swapping to a L92/l76 would save money and outflow an Ls2 setup.
03-28-2007, 06:54 PM
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Originally Posted by 52172
definetly ETP ls7 heads if you got the cash might as well go titanium valves too so you can rev the **** out of it.
03-28-2007, 08:23 PM
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Yes - that is the plan. The ETP's are really nice, but really expensive. I am waiting to see flow numbers from Livernois. I am more concerned with exhaust side flow than intake. The stock L92's are a little light from what I remember.
04-25-2007, 11:31 AM
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It looks like the CNC L92 heads flow better on the intake and eaxhust side than the ETP 4.0 LS7's and better than the 4.1 LS7's exhaust but not as good on the intake. Considering I am planning FI, should it matter that the intake side is not as good and that the L76 intake is not as good as the LS7 intake?
