What should fuel pressure read 95 Chevy 454?

The fuel pressure specification for a 1995 Chevy 454 depends heavily on whether it's a TBI (throttle body injection) or a MPI (multi-port injection) system. There's no single answer.

* TBI (Throttle Body Injection): Fuel pressure for a TBI 454 will typically be in the range of 9-12 psi. However, always consult your specific vehicle's repair manual for the precise specification.

* MPI (Multi-Port Injection): MPI systems on a 454 (less common in 1995) will have a significantly higher fuel pressure, likely in the range of 30-50 psi or even higher. Again, check your vehicle's repair manual.

Crucially: You absolutely *must* consult your owner's manual or a repair manual specific to your 1995 Chevy 454's engine and fuel injection system. The pressure can vary depending on the exact configuration and year-specific details. Using the wrong fuel pressure can damage your engine.