I just had this crazy idea pop in my head. I keep trying to think, "what's different from the dyno than the installation in your car". I don't know what type of dyno your engine was run on, but my dyno, a Superflow SF-901 REQUIRES a manual transmission flywheel and a drive plate to couple the engine to the dyno. Your car is an auto trans unit. You need to make absolutely sure you are using the correct flex plate to crankshaft bolts for your application. These would be bolts that have a super narrow shoulder under the head, threads almost all the way up. They should protrude through the flex plate into the crankshaft and stop just shy of flush on the inside of the crankshaft flange. There may be a shim used on the assembly or not depending on year. Torque is 95 Ft. Lbs. Make absolutely sure all this is correct or it absolutely will make a knocking noise much like what I am hearing. Again, I can't help feeling something is different from the dyno to your installation that is causing this. Good luck.
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