Just curious who or there has a supercharger on their 454 magnum specifically. I have a few curiosities.
If so how much boost are you running?
Is the short block stock?
How much HP do you estimate your making?
How many RPM do you cruise at and how high do you take it?

Here’s a complete bolt on kit from WHIPPLE. I’d be willing to bet boost is kept somewhere near 5 lbs and HP is up around 175


https://whipplesuperchargers.com/i-2...pi-sc-kit.html

whipple 2.3 side mounts by Smitty in frankenmuth mi
700-800hp

454 build and dyno test

525SCs modded

Another dyno session, 454 w bm 420 megablower

Mild thunders 468s, went 96mph in a straight bottom 38 fountain.

I've used both , so this is a comparison of a screw type and a centrifical, each having distinct advantages :

To stay in line with your questioning the answers are very easy. Your stock bottom end is forged and the engine is actually fine to run boosted. The cam will do what it does naturally aspirated so stock power points will remain as will manerisms. You will get proportionate power as you increase the boost. Stock rings become your concern because with more heat you have more need for LARGER ring gap. So here you can see horspower of up to 50% over stock so figure 600 range with up to 10 pounds of boost while watching your temperatures, keeping them in moderate operating ranges. Excess heat lends itself to ring gap concern. Using carbs and a blow through hat is just as easy as EFI, both will need a corresponding Tune.

Drive strength is critical because your TORQUE down low is Massive right off Idle, especially with a BBC. Thats why I included the comparison, also a cam is also part of an advanced package because you can exchange Low RPM torque for Horsepower which will show up in Top End Speed. The Magnum is peaked out at 5K RPM, where a cam can extend that through 6.5K easily and ease the shock on drives out of the hole when into the gas. Hopes this helps out in your project and answers some questions.

Screw blowers (I.E. B&M ) are more abrupt with power and will require more concern for drive strength where Centrifical blowers (I.E. ProCharger, Vortec ) are delivering more power as RPM rises so not as much immediate, abrupt shock. Stock Engine , again, will maintain the same RPM range and fall off Horespower after 5K, so if your looking for more speed you may need to recam. The Centrifical Blower will have an advantage in gaining more RPM as its boost curve raises with RPM by nature moreso than a screw type blower. So the need to recam may not be required.