Cap and rotor, yes. Points, no.
inside the distributor.
No it is not.
A vortec has bolts in the center of valve covers, instead of around the bottom edge
5.7 vortec
Chevy blazer '78
The 3A has a mechanical distributor (points) and the 3AC has an "electronic" distributor.
What is the spark plug gap for a 1994 chevy v6 vortec motor?
http://autorepair.about.com/library/firing_orders/bl-fo-7742.htm
On the '94, you probably have a 'Z' engine and you'll need a distributor with top-mounted plug wires. If I am wrong and you have a 'W' motor, you'll need a distributor with side mounted wires (serious pain). They are both top mount plug wires. It was not until later they had the side mount wires. Vin "Z" is a TBI (throttle body) Vin "W" is Vortec. TBI has breather mounted on intake Vortec says Vortec on Intake
NO. And it won't work in the place of the 97 350 vortec.
We need to know size engine you have.
Inside the distributor.