C 2500 Suburban 2WD V8-454 7.4L (1994)
Fuel Pressure Regulator: Specifications
4.3L, 5.0L and 5.7L engines ......................................................................................................................................................... 62 to 90 kPa (9 to 13 psi)
7.4L engine .............................................................................................................................................................................. 179 to 220 kPa (26 to 32 psi)