Under the upper intake assembly
if its a full size pickup, with a v8, the fuel pressure regulator is in the tank, its part of the sending unit
Yes
The engine computer is the regulator.
The engine computer is also the regulator.
Under the upper intake assembly
5.7 liter vortec.
The engine computer is the voltage regulator, and yes you can replace it.
the regulator is located in the throttle housing (where the fuel lines connect)
38-44 psi with pressure regulator vacuum hose disconnected and plugged
It would be nice to know the years of the 2 engines to tell you the fuel pressure for sure. But I do KNOW that the Vortec engine requires alot more fuel pressure to run the engine then your other engine requires.
Built in the alternator
It is located in the throttle body.