You will need an after market Vortec Intake None FI 4BRL set up. The vortec engine has longer runners to increase air speed for the vorteciy action of the heads.
No.
Not easily. You have two completely different fuel systems.
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
The 4.3 Vortec engine never had a carburetor.
" vortec " is a title that GM uses on some of their engines
A vortec 5.7 is a lt1 based engine.
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