try changing your fuel filter.
To replace the distributor on a 5.7L Vortec engine, first, disconnect the negative battery cable and remove any components obstructing access to the distributor. Mark the position of the old distributor and the rotor's orientation for proper alignment during reinstallation. Remove the distributor hold-down bolt and lift the distributor out, taking care not to disturb the engine timing. Install the new distributor, aligning it with your marks, secure it with the hold-down bolt, and reconnect any components and the battery.
To remove and replace the distributor on a 1997 5.7 Vortec engine, first disconnect the battery and remove the ignition coil and any wiring connected to the distributor. Mark the position of the distributor housing and rotor for proper alignment during reinstallation. Remove the distributor hold-down bolt and carefully lift the distributor out, noting the orientation of the gear. Install the new distributor by aligning it with the marked position, securing it with the hold-down bolt, and reconnecting all wiring and the ignition coil.
NO. That would be the TBI / throttle body injection engine Not a vortec. The vortec will not work in the 91.
Vortec 6.0L
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
I have a 1996 Z71 with a vortec 350. It has a new battery and starter but turns over very hard. I can get it to start with a jump but not without. What am I overlooking?
It is in the distributor.
Vortec V-6
315 hp
5.7 vortec
As far as a direct bolt in NO. But if you have the smarts and the know how, you can put anything in there.
315 hp 345 torque