How to identify a real LS7 427 Z06 Motor

[68sixspeed]

yes, 7.0 cast into the back of the block, cnc's intake and exhaust ports, the intake manifold runners are kind of flat on top vs the rounded profiles on the ls1 and ls2 types, dry sump hookups on the oil pan (and 2 drain plugs), oil cooler connection points, bigger throttle body too. Crate motors may not have a s/n, I'm not sure, but I can get a casting # off the block if you want. If you need pics, I have 1 on the shelf for a project and one in a car I can take pics of to let you verify. -Dan