OK, I have a 383 Chevy motor in my 38. I need to know where to set the timing on this motor. Is it the same as a 350 or different? I have a lot of pinging and just can't seem to get it to go away.Even with high test gas.It also has no power. It's really hard to see the marks due to the power steering pump being in the way. If anyone knows about where it should be set please let me know. Any assistance would be greatly appreciated. Thanks!