Does anyone know what they are?

 

These are for the LS4 5.3 should be about the same in the NBS trucks with 5.3L DOD motors.

Camshaft specs:
Camshaft Lobe Lift - Intake - Non Displacement on Demand Cylinders
7.2 mm
0.283 in
Camshaft Lobe Lift - Intake - Displacement on Demand Cylinders
7.33 mm
0.289 in
Camshaft Lobe Lift - Exhaust - Non Displacement on Demand Cylinders
7.2 mm
0.283 in
Camshaft Lobe Lift - Exhaust - Displacement on Demand Cylinders
7.33 mm
0.289 in



Call Comp Cams surely they would now the stock specs for sure.

 

This is from a LC9 5.3 VIN code 3 engine.........
Camshaft Lobe Lift - Exhaust - Non Active Fuel Management Cylinders
7.2 mm
0.283 in
Camshaft Lobe Lift - Exhaust - Active Fuel Management Cylinders
7.33 mm
0.289 in
Camshaft Lobe Lift - Intake - Non Active Fuel Management Cylinders
7.2 mm
0.283 in
Camshaft Lobe Lift - Intake - Active Fuel Management Cylinders
7.33 mm
0.289 in

 

that is the lift only. Too bad GM doesn't list the durations..