I have a 78 Chevy Nova, 350, Holley 4 barrell carb, accell firing system. When I accellerate or try to take off fast, or go up a big hill, I hear a rattle in the engine. At first I thought maybe lifters, but that would be more of a ticking sound. Could this be my valves, and if so what does this mean and how much to fix ? I am driving it easy right now but really need some help. Any ideas about what this could be ?

I have an electrical problem with a 84 Nissan Maxima, 6 Cyl, Auto Trans, 110,000 miles. The electrical system is dead except for the power windows/ sunroof. The symptoms I am encountering are as follows: 1. Car does not start ( no power to the starter yet I hear an electrical sensor ) 2. No lights 3. Windshield wipers don't work 4. No Horn 5. No Emergancy Flashers I checked the fuses in the fuse box under that dash (all ok) I checked the grounding connections and battery terminals (all ok) I checked the fusible links, Battery and on the fender (all seemed ok) I inspected the steering column wiring/connectors (all ok) Charged/ verified the battery is ok as well as the connections. Where should I look next? The car is not worth too much but someone wants to give me something for it as long as it runs. Any help would be greatly appreciated.