My 318

Okay, so today i drove my 73 duster to work. I had to leave early to go to school, for the past couple of weeks its been running great. But as soon as i get on it after leaving a stop light it starts to make this knocking noise. The motor has been rebuilt, bored .030 over, 360 heads, .480 lift comp cam, TTI headers and exhaust, MSD ignition and such. The oil is full also, I have no clue as to why it is making this noise. Any help would be greatly appreciated.
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