My opinion:
IF it would fit I would think that you loose power everywhere, except maybe under 2K RPM maybe.
I checked those heads and they have 2.04 & 1.57 valves = 3.61" I dont think they would fit in a 3.78 bore, and IF they fit you would loose a lot of flow because of shrouding.
And they probably also have an combustion chamber that is bigger than 3.78 so they will get "overhang" and probably gasket problems.
And the .600 flow number does not matter since the cam only have .525 lift, and the mid range lift flow numbers are much more important than the peak lift/flow number anyway.
I see that all LS engines (and modern engines actually) have pretty big runners (compared to older engines SBC etc), but I would think that a 229cc runner does not promote a good low RPM torque engine. Even though it is modern tech. I dont know how small LS heads you can get, but I would think that you should not go over 200cc if you really want a torquey engine. You must match your heads to the rest of the engine.
EDIT: I think there is a page called Speedtalk? There there is a lot of knowledgable engine people I think, maybe they have some input.
Last edited by Twoblackmarks...; 06-02-2015 at 05:26 PM.
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