Idle shake

depends on the cam. i wouldn't be thrilled with that, but it's more than enough to run power brakes.

speaking of... do you has? if so, check the line & fitting on that ****.

have you had the manifold off?
Manual breaks. I haven’t had the manifold off but it’s dirty and nasty and it’s the wrong manifold for the 360, the ld4b so I was hoping to swap it anyways. I did confirm the 0 mark on my dampener is TDC.