It should be with the tune up specs on the fan shroud.
#2) it shouldn't be anything you worry about. new spark plugs are pre-gapped and shouldn't be messed with. in most cases today spark plug gapping is a thing of the past unless your building a race car.
Nothing
1996 Chevrolet Impala SS 5.7L SFI OHV 8cylThe Spark Plug Gap.050 (In thousandths of an inch)
ALLDATA.COM http://autorepair.about.com/library/firing_orders/bl-chevrolet-firing-95.htm
The radiator drain plug on a Chevrolet Corsica is the lowest, skinniest hose on the back of the radiator. The radiator cap will have to be removed to allow for fast draining after this hose is removed.
A 2009 Chevrolet Silverado with the 5.3 engine requires a .040" spark plug gap.
call autoparts house
The spark plug gap is listed in your owners manual, and under the hood on a placard. When you purchase the new plugs, the auto parts store can also provide the proper gap.
.060
2004 Chevrolet Aveo 1.6L MFI DOHC 4cylThe Spark Plug Gap.044 (In thousandths of an inch)
.045 plug gap.
The spark plug gap for a Chevrolet Tahoe 5.7 350 Vortec should be set at .060 inches. This spark plug will be purchased preset from any auto parts store.
the spark gap .060