I am in australia and they are very hard to get. Also i thought the Chevy LS heads weren't the same bore spacing as the old 350 chev? Please correct me if im wrong but thats why the blokes running 350 chev (cast iron) can't just whack a set of LS heads on, rather they have to go aftermarket. With the EFI i am just going to make up a custom system that runs tuned length tubes, injectors from a junkyard LS series, maybe just flog some 6 throttle bodies off small toyota or something and run them. Any ideas on how to run this injection system and ignition system through a laptop? Just run a MoTeC M800 ECU? with data logging?
I don't know about bore spacing fore sure (I think they are the same) but the bolt pattern is completely different (only 4 head bolts per cylinder in the LS) and I believe the coolant ports are different too.
Not that relocating holes for water to pass through would be any kind of big deal on a project involving saws and welding.
