Fuel Pump Question

[KRAZIE87K5]

Does anyone know if the 86 K5 has electronic fuel pump??? I am trying to install a 454, and I need to know if I need to look into a pressure regulator. I am installing a 750cfm 4150 Holley for the 454, and if the truck has a elec. pump, I'm sure I will have to tone it down some so I don't make the Holley unhappy :-(

Suggestions???? Thanks all!

 

[pr1aw]

Looking at the Specs it says that fuel injection started in 87. Going from this info you should have a mechanical fuel pump on the engine. Make sure the 454 has a mechanical pump or you could go with an aftermarket electric fuel pump that puts out about 6PSI pressure. If you want run a higher volume get a 12PSI and run a fuel pressure regulator. To much pressure will unseat the needle valve in the float bowl and cause a flooding situation.

 

[90K5]

I helped a guy replace his...actually I replaced it while HE watched...on an '86 C20 and it was electric.

90K5

See my truck at <A target="_blank" HREF=http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502>http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502</A>

 

[KRAZIE87K5]

I was never lucky enough to see the factory installed 350... I bought the truck minus drivetrain. I spose that I could look for a harness at the tank, right? Could the VIN tell me anything do you think?

 

[pr1aw]

That was my next suggestion, look at the tank for wires going to it. If so, then you might be lucky because the orginal had a carb on it and the electric fuel pump will be of the proper pressure. I would still hook up a fuel pressure tester to see how much pressure though.