popping noise 2nd video.....

You set the rev limiter on your MSD box a little too low??
 
Naa...We ran more timing than this in the past. I wonder if the external gate is begging for mercy & popping back & forth?
 
Have you tried throwing a new injection pump on it just to see what happens?
 
I don't want no butt cookie. I'm out. You can just fix your stupid car yourself mister.lol
 
After reading the other thread I see its not a funny post. Sounds like a pump cam issue maybe tappet or engine cam lobe,tappet,pushrod,spring... If engine cam and valve train seem ok I would pull the pump and have it benched to make sure its even.
 
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I've heard that noise (or something similar) a few times right before a truck stuck a plunger or rack or something. My bet is that it's something with the pump, if you say the injectors are ok.
 
Didn't you say in the other thread you did a leakdown test and thought it was a valve?
 
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