I bought an adjustable timing set and I don't know where to set it. The engine is:

LQ4
799 heads
About 10:8 compression
1.8 rockers
Camshaft:
DUR @ .004" 278*/ 286*
DUR @ .050" 216*/ 224*
LIFT .551/.551
LSA 115*

Z06 manifolds
No cats

 

That looks like the Crane cam. I would set it at the cam specs (no advance or retard from the timing set).

 

What is the advance built into the cam already (if any)? Should be on the cam card.