L92 Valve Angle
^^Correct. LS7 = 12º, C5R = 11º, and the rest of the GM Gen3/4 heads are 15º.
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Correct, all other GM production Gen3/4 heads are 15º as of today.
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Hold your horses for a second...
Although it's the same valve angle, they're spaced apart farther.
Here's my LS3 head:
Here's my LS1 head:
Here's the LS3 valve:
Here's the LS1 valve:
And here are pistons made for the wider spaced valves and larger intake valve:
Although it's the same valve angle, they're spaced apart farther.
Here's my LS3 head:
Here's my LS1 head:
Here's the LS3 valve:
Here's the LS1 valve:
And here are pistons made for the wider spaced valves and larger intake valve:
Well of course they have different valve sizes and spacing! He just asked about valve angle 
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