Look at the intake manifold. A vortec engine has 8ea. All the others have 12ea.
A vortec 5.7 is a lt1 based engine.
The vortec has bigger pistons
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
For most vehicles, the type of engine within the vehicle can be found listed in the owner's manual under specifications. However, if this is missing, do not fear. If the vehicle is older than 1995 and has a stock engine, the chances of it being a vortec 4.3L are nearly 100%.
The 4.3 Vortec engine never had a carburetor.
" vortec " is a title that GM uses on some of their engines
will a 4.3l vortec starter fit a 305 vortec?
No it is not even close.
Yes as long they were mounted on the same side of the engine.
torque diagram
Yeees?
No because the ports on a tbi head are different than the ports on a vortec head, vortec heads need a vortec intake however you can switch a carburated engine to a tbi engine because the heads are the same