Quote Originally Posted by PonyKiller87 View Post
Did you use a GM distributor cap? The Vortec 4.3, 5.0 5.7 and 7.4 are very picky about the distributors. A lot of the aftermarket ones that you get at auto zone are aluminum posts vs the GM brass posts. Also check the shaft play in the distributor, if you grab the rotor and can move it side to side its junk. If you need a new one look on ebay, there are companies selling the aluminum bodied distributors with the brass point caps for about $70 which is far less than the stocker and a ton better.
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