A high pressure pump is only one with a stiffer spring. Again, it will have no impact on your idle oil pressure. The spring simply sets the max pressure that is allowed and then all the pressure after than to sent back to the pan along with it's volume.
Ok thanks.I'm going to try the 30w and see if I can get a bump in pressure up to 20+.
Is this the same engine you had lifter problems with? If so what was the pressure before you went to the solid lifters?
Good question and yes it is the same pressure at idle, I didn't see any noticeable change and I'm using same oil Lucas Hot Rod 10W-40.
Lifters now sound a lot better as solid across the rpm range.
