The best way that I have found is to set them with the engine running, but for the basic setting set your tdc marker on zero adjust the lobes that are up by seating the pushrod with zero lash to the lifter then down 1/2 turn. rotate the engine 90 degrees set the lobes that are up and so on. after you have them set I always do a final running if permittied back them off till they clatter tighten till smooth then down 1/2 to 1/4 of a turn do them one at a time, and make sure to use a piece of cardboard around the bottom of the head for oil.
2002 5.3 Chevy don't have egr valves factory removed them in 2002
That requires an engine scanner to set the timing.
Zero lash then one turn in. (assuming this is a stock Chevy 350)
the Chevy 5300, 2003 and other v8 built in that year the spark plug gap should be set at .060
Probably computer controlled and not adjustable
8 degrees.
The 2011 Aston-Martin V8-Vantage has 32 valves.
The 2010 Aston-Martin V8-Vantage has 32 valves.
The 2014 Aston-Martin V8-Vantage has 32 valves.
The 2007 Aston-Martin V8-Vantage has 32 valves.
The 2006 Aston-Martin V8-Vantage has 32 valves.
The 2013 Aston-Martin V8-Vantage has 32 valves.