[Jay S]

Originally Posted by Formulajones

Thing is I'm not running any spring pressure to speak of. 135 on the seats is whimpy for a hydraulic roller ,, that's dam near solid flat tappet territory.

SBC doesn't need a ton of pressure anyway the valvetrain is pretty light. Not like a Pontiac or BBC where I typically run 150-160 seat pressure on a hydraulic roller

So to have sewing machine noise and also have one bleed down after sitting a bit with these little springs doesn't speak to well of the evolutions in my eyes.

If I remember right you have a Bullet cam in that SBC too. They are easier to make quiet than these XR comps. That should have been dead quiet. (Edit)think the Bullet is in the 327 has HLJ SE’s. I am not sure which engine has Evo’s?