A vehicle transmission pressure regulator valve for regulating oil flow to a torque converter clutch from a pump in a lubrication circuit of the transmission wherein the valve includes a plurality of spaced annular lands integrally formed with a core body of the valve and wherein at least an outermost regulation line dump circuit control land and a second intermediate torque converter feed control land are tapered inwardly toward the core body and in a direction of an innermost pressure regulator balance land so to dynamically regulate flow into the regulation dump line and the torque converter circuit feed circuits due to the tapered surfaces of the two valve lands and wherein an additional converter assist spring is seated within an inner end of the valve so as provide a continuous force urging the valve toward and open position within the valve seat bore of the transmission.