double check your plug wires to be sure you have the correct firing order.
Use a screw driver and hold on your distributer base to see if the sound is coming from there... stethoscope is better.

i had a 383 in my 65 dodge and the squeak noise wound up being a burnt exhaust valve..had like a "V" shape burned into it, are they 906 heads? are you running no lead fuel? cause if you dont have hardened seats they will burn. i hope this helps and i hope im wrong

Pat, the rocker arm shafts have offset oiling holes for the rocker arms. Is it possible you have one or both of them turned around backward so the rockers aren't getting proper oiling?

Can't view the video at work but I hope it's not the same squeek I had years ago. Mine was a rod bearing.

Yikes....

Here is what the driver's side rocker shaft looks like. Above are the numbers stamped in the rocker's underside, below is obviously their location, and below that is the cylinder.



The stamped numbers don't seem to make any sense in the arrangement of them in relation to the int/exh lineup. Also, the one rocker I'm having the squeak on is not numbered like the others. It is 162+ and the others are 167+/166+. Interesting?

Is it possible that the oil hole for that rocker is plugged up? Remove the shaft and clean it real good and check all of the oil holes. Reassemble and pull the plugs and coil wire and turn the engine over and observe the oil flow to make sure oil is getting into all of the rockers.

Possible that cam brngs. are not indexed right, #1 exhaust is the last to get oiled.

Oil holes down, pointing to the valves.

Well, I have only dealt with small blocks, but IF the big block shafts work the same way there is a notch on one end of the shaft. The left bank (drivers side) the notch should be in the front in the down position, the right bank the notch should be in the back in the down position.

When I reassembled my rocker assembly there was an R and an L stamped in the rocker for right and left as you looking at them.

Just make sure you get the rockers on the shaft in the right order, they are right and left offset.

What was the result Pat?

Yes Pat we all want to know, we can't sleep at night, What the HELL is that squeak??

I had the same noise appear in my 440 a few weeks after i bought the car, a noise that sounded like a bearing going out or something, listened all over with a dowl but couldnt figure it out.

It sounded like it was coming from the right side, but couldnt pinpoint it.

It went away when i changed the oil the first time after i had the car. It had a blue GM filter on it.

I took apart the filter thinking it may have been collapsed, it looked ok. It hasnt made the noise since, could have been thin oil too.

well I might sleep a little better this weekend

hope it works