Hi guys I got sbc 383 that sounds like the timing is off. The engine is pretty shaky but every once in awhile there will be a big shake. I'm thinking its detonation. Also it starts backfiring pretty bad in the top end. I took a video to let you guys hear it. You cant really hear the backfiring but maybe you can give me some clues on whats up. I tried to get a shot of the crank and water pump pulleys because it looks like they wobble, should I be concerned?
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