From the factory, YES.
5.7L 350 Vortec engine.
5.7L 350 vortec
270 hp
If you attempt to put a vortec engine into a vehicle with a NON-vortec computer, you'll have more problems than you care to deal with.
The 1997-2005 Vortec 5700 engines are EFI, as opposed to the earlier mid-80's and up 5.7 which were TBI.
The vortec has bigger pistons
Look at the intake manifold. A vortec engine has 8ea. All the others have 12ea.
The 2001 model of the Light-Duty Silverado 1500, had an option of four engine sizes; a 6.0L Vortec V8 engine, a 4.3L Vortec V6, a 4.8L Vortec V8 or a 5.3L Vortec V8. The Heavy-Duty 1500HD comes with three engine options, these are 6.0L Vortec V8, 8.1L Vortec V8 and a 6.6L Duramax V8
About $14.00 for a good 1.
The oil pressure sensor, on your 2003 Chevrolet engine, is located on the front of the engine, just above the oil pan. The pressure sensor will have two wires going to it.
The 4.3 Vortec engine never had a carburetor.
" vortec " is a title that GM uses on some of their engines