rectangular or cathedral
LR4 and LM7 all came with cathedral port heads. Mostly 706 and 862 castings. 243 castings are also cathedral port and came on the early LS6 Z06 motors(pre-2005 Vettes) and the LS2s.
Short version: All you asked about are cathedral port.
L76, L92, LS3 are rectangle port..LS7 and related are an exotic rectangle port...closer to square.
Short version: All you asked about are cathedral port.
L76, L92, LS3 are rectangle port..LS7 and related are an exotic rectangle port...closer to square.
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LR4 and LM7 all came with cathedral port heads. Mostly 706 and 862 castings. 243 castings are also cathedral port and came on the early LS6 Z06 motors(pre-2005 Vettes) and the LS2s.
Short version: All you asked about are cathedral port.
L76, L92, LS3 are rectangle port..LS7 and related are an exotic rectangle port...closer to square.
Short version: All you asked about are cathedral port.
L76, L92, LS3 are rectangle port..LS7 and related are an exotic rectangle port...closer to square.
