My pressure regulator needs to be replaced and the original part # is no longer available. is there another regulator that will work ?

FPR, 4.3L
SM quote
the fuel pressure regulator, part of the fuel rail assembly, keeps the fuel available to the injectors at a regulated pressure. A separate pipe returns any unused fuel to the fuel tank.
The fuel meter body assembly?(1) attaches to the lower intake manifold. The fuel meter body assembly performs the following functions:

• Distributes fuel evenly to the injectors?(12)
• Integrates the fuel pressure regulator?(14) into the fuel metering system

here it is right here #14

Pressure regulators are not expensive. Try replacing it.

Any similar electrical switch will work. N.O, N.C, momentary or toggle type will work. The physical configuration might prohibit the installation. There are tons of them to choose from.

The fuel pressure regulator is located INSIDE the intake manifold. If you are going through the work of replacing it, i strongly suggest replacing the injectors. An updated injector setup is available as the originals were very problematic.

pull the vacum line off your fuel pressure regulator. If it smells gasy or has gas dripping from it, replace the regulator.

When the pressure regulator fails, no pressure will be available at hose. Replace the regulator with generic available at Lowes or bypass. To bypass the regulator (this method will give you full tank pressure to hose) remove the safety valve (or gauge if it threads directly into tank) and install a tee fitting. On one side of tee fitting reinstall the safety and the other port is for quick connector. You can also install a regulator here if you would like to save time and the old regulator is difficult to remove. Good luck

I would start by checking the engine timing it may be slow. Hope this helps.

This sounds like it is either the pump is leaking from the piston or more commonly, the rubber seal that seals the outlet tube to the cylinder head blew out like mine. Let me guess, it got a lot louder than it was originally? The seals are readily available from sears parts direct, its like 3 bucks but shipping is around $8. Hope this helped

Cook' Essential liners have a lietime warranty, call 800-231-9786. They no longer available, so they will give u a refund of at least $150.00

Slimsoul, a bad fuel pressure regulator would cause a problem similar to this. You may already know this but a fuel pressure regulator kinda works backwards from the way you would think. When your car is at idle it produces the most amount of vacuum which power things like brakes. As your RPM's increase your vacuum drops. When a fuel pressure regulator recieves 0 vacuum it fully opens and allows the most amount fuel to flow through. So, you mash on the gas from idle and the car stumbles from lack of fuel. A common cause of this is because the regulator diaphram has a hole in it, which causes it to open slowly. There is a very simple test for this that, yes, even you can try at home. I'm assuming your corvette is a C4 (84-96). Open the hood, stand on the passengers side, and stare towards the back of the plenum just in front of the distributor. Now look underneath the upper plenum, and attatched to the lower manifold at an approximate 45 deg angle is a round piece that kinda resembles a top hat. This is your regulator. There should be a hard black plastic vacuum line attatched to the regulator. Now for the tricky part, unplug it and crank the car. If the regulator is in fact the problem, this should at least improve if not eliminate your problem. If it does not, my next step would be to check your fuel pressure with a fuel pressure gauge available at Autozone for around $40. A TPI motor needs at least 40 psi to operate properly. Back to the regulator, if it is in fact the problem your going to have to replace the diaphram in the regulator which is somewhat of a pain. You have to pull off the throttle body and upper plenum to get to it. Additionally the FPR is secured with special security torx bits, I believe its a T5. The plenum runner gaskets and throttle body gaskets will need to be replaced if they're original. If you're not somewhat handy I would suggest taking it to a shop to do the job.