Spring/Keeper interference with Rocker

nm9stheham said
I am not certain at all that the springs/retainers are responsible for all the cutting on the rockers. Based on the deposits on the cuts in some areas, parts of the cuts have been there for a long time. OP, are there any wear marks on the edges of the springs or retainers? I cannot see any spring/retainer wear in the pix, but I may not have the right angle.

Not that I can see - which makes me believe the clearancing on the rockers has been there from some time / manually done (very oddly though)
Video Link: https://photos.app.goo.gl/Ttf4B6FkqpkUDYVa8

nm9stheham said
I'd start with checking the springs' outer diameter; SBM is 1.460". BTW, the retainers being smaller than the spring is common but this looks to be a bit much of a size difference.

Then check spring installed height from top of spring to the head; SBM is 1.650". If these are long, then rockers will be tilted up and more prone to hit the retainer/spring edge when closing.

Being that this appears when hot and the oil is thinner, it could well be a lifter. A short/bent pushrod is also possible as well as an exhaust leak at one port.

Wouldn't one believe that if the heights were incorrect, this issue would have always been present? Again, this just started out of no-where. Also, I was wondering about the exhaust leak... It seems way to 'metal on metal' like, but the exhaust leak has got me before.

What is everyones thought on the fuel pump causing noise through the cam / block?