I think it has been brought up before, but I guess I'm slow. :roll: Have you guys read or checked out the L92 heads for LSx motors? 15-degree aluminum small-block cylinder heads that flow 320 cfm for about a $1000 complete including offset rockers and stronger springs. You could build a pump gas SBC making 600 hp without breaking a sweat. Just think about the potential of a turbo/EFI setup! Wonder what kind of HP the "stock" 6.0 cast iron block can handle?
Here's a good article with a "junkyard" 6.0 LSx motor with cam swap and carb setup: http://www.carcraft.com/techarticles/ccrp_0705_chevrolet_ls2_l92_cylinder_heads/index.html
Here's a good article with a "junkyard" 6.0 LSx motor with cam swap and carb setup: http://www.carcraft.com/techarticles/ccrp_0705_chevrolet_ls2_l92_cylinder_heads/index.html