no the cam remains the same,
You can put the Vortec in it if you have the wiring and ecm to run it. or you could use the Vortec heads and an aftermarket intake and really wake up your engine. The vortecs use a roller cam.
What do you need to know about it, and what is your question. NEUTZ.
It is mounted inside of the distributor under the rotor button.
For an '84 Silverado, a 350 Vortec engine would generally be a better choice compared to the 305 with a 488 cam. The 350 Vortec offers more displacement, which translates to greater torque and horsepower potential, making it more suitable for various driving conditions. Additionally, the Vortec heads provide improved airflow and efficiency, enhancing overall performance. If you're looking for a balance of power and reliability, the 350 Vortec is likely the superior option.
The only thing special about the Vortec is the heads -bore and stroke should be the same on all 350 blocks. Cam is probably different though.
use your pre 87 unless you have rollers or the application calls for +5 or other.vortecs have rollers.
You don't have to change the cam, but a cam that is perfect for a 350 may not be perfect for a 383. Cam manufacturers offer technical assistance to help you select the right cam for your application.
approximately 320
It is in the distributor.
To time this engine correctly you will need a scan tool. Using a scan tool you will watch the cam retardation and set it plus or minus 2 degrees from 0.
No cam sensor. Just a crank sensor on the bottom of the timing cover
Contact their cam help for a specific recommendation.