ET 11 degree ls1 heads?
ET 11 degree ls1 heads? Are these a new casting? I would imagine they must be since the valve angle is 11 deg vs 15 degree. This is the same angle as the upcoming ls7 heads. Do they require offset rocker arms? The flow numbers look like they are the finest heads around.
They are new castings. Notes:
Require standoff for stock rockers or Jesel ~$100
11 degree vs 15 degree
.800" thick deck
~.50-.75" taller valve cover mounting height(no more spacers)
Many different runners available 215,225,240,255,265
Combustion Chambers 37-72cc
Solid or Hyd roller
I am building 2 346s with these heads to see how they compare to other builds we have completed. We're really anxious to see how much faster this motor is going to go over my current setup which flies.
Phil
Require standoff for stock rockers or Jesel ~$100
11 degree vs 15 degree
.800" thick deck
~.50-.75" taller valve cover mounting height(no more spacers)
Many different runners available 215,225,240,255,265
Combustion Chambers 37-72cc
Solid or Hyd roller
I am building 2 346s with these heads to see how they compare to other builds we have completed. We're really anxious to see how much faster this motor is going to go over my current setup which flies.
Phil
They look like the nicest heads available today! I like the fact that you dont need offset rocker arms. I plan on getting new heads for a resleeved ls1 block 4.200 using stock crank all bore 401 motor and was going to wait and get ls7 heads and intake to use on top, which I think might make more power even over these heads since I can utilize the new ls7 intake which has got to outflow the fast 90 don't you think? I imagine you need to use the fast 90 with these new heads which even with the 90 mm tb opening limit the intake flow I hear?
Originally Posted by 52172
They look like the nicest heads available today! I like the fact that you dont need offset rocker arms. I plan on getting new heads for a resleeved ls1 block 4.200 using stock crank all bore 401 motor and was going to wait and get ls7 heads and intake to use on top, which I think might make more power even over these heads since I can utilize the new ls7 intake which has got to outflow the fast 90 don't you think? I imagine you need to use the fast 90 with these new heads which even with the 90 mm tb opening limit the intake flow I hear?
etheads if you want the ls7, we also make that from our casting, and it adds all the features of the thick deck and slightly revised ports. but the ls7 manifold will be a direct bolt on for that. as far as the other versions, they should use a fast intake to reap the benefits of the heads.
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Verdad Gallardo I never knew et was coming out with a new intake manifold? When is it supposed to be finished and how will it compare to the ls7 intake? If the new manifold will outflow an ls7 manifold it will be worth the wait I want to do it right the first time. I can't imagine how the ls1 port design and this new manifold could ever outflow the ls7 rectangular intake ports and their new intake? ET what is your opinion?
I just heard from steve and he recommends a bore of 4.18 or 4.185 can the 265 heads be opened up to this bore? How will the new manifold compare to the ls7 manifold as I don't want the manifold to compromise the head flow any.
I just heard from steve and he recommends a bore of 4.18 or 4.185 can the 265 heads be opened up to this bore? How will the new manifold compare to the ls7 manifold as I don't want the manifold to compromise the head flow any.
Last edited by 52172; Sep 21, 2005 at 12:29 PM.
Originally Posted by 52172
I never knew et was coming out with a new intake manifold? When is it supposed to be finished and how will it compare to the ls7 intake? If the new manifold will outflow an ls7 manifold it will be worth the wait I want to do it right the first time. I can't imagine how the ls1 port design and this new manifold could ever outflow the ls7 rectangular intake ports and their new intake? ET what is your opinion?
I just heard from steve and he recommends a bore of 4.18 or 4.185 can the 265 heads be opened up to this bore? How will the new manifold compare to the ls7 manifold as I don't want the manifold to compromise the head flow any.
I just heard from steve and he recommends a bore of 4.18 or 4.185 can the 265 heads be opened up to this bore? How will the new manifold compare to the ls7 manifold as I don't want the manifold to compromise the head flow any.
