I realized I made a whole video on this last year before I took everything apart for paint. There's a really great explanation and overview of my thoughts, showing the valve train running, looking at the pushrods out of the head, etc. in this video if y'all care to hear me chat for 10m
The link goes straight to the best example I have for that sound.
@Tom - The pushrods definitely seems to make a bit of contact with the head but it seems like it wouldn't make this kind of sound. You can see the bit of wear on the sides of the pushrods in the video at 4:21 in the video
I didn't think it would be a bearing failure because I figured I would've seen shiny stuff in my oil at my oil change in the beginning of the summer. Oil pressure is 15-20psi at idle. 40-45psi at higher RPM. No drop in pressure over time as these are the same pressures I had since break-in last year.
@Beater - I did not add pushrod guides with the roller rockers.
@Twisted6 - I had a shop do it so I guess I just assumed they heated the timing set to install it
I figured it if was a timing gear or camshaft related, I'd hear some scary sounds coming from the back and front of the engine from the thrust of the cam and have oil pressure issues but maybe not?
69 Buick Special Deluxe. Intercooled Turbo Chevy 250 @ 15psi on a stock long block. It's kinda fast.
