The Summit K8600 is a good cam, but may be a little too much for a 304. By a fair idle, they mean that lopey race car sound, with the long duration, it would have a lope to it. That's a better cam for 360-401. The other two look pretty good. Measure the pushrods, you'll want stock length with a simple rebuild.

This is the one I like: http://www.summitracing.com/parts/edl-2132

Valve springs need to be matched to your cam. Get springs that the cam manufacturer recommends or you void the warranty on your cam and risk rounding cam lobes. Get the roller timing chain, it's much better than a stock one. Pushrods and gasket kits can be sourced locally for about the same price. You'll need the intake valley gasket.

Bob
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