So, from all that, 500CFM should be a hellacious blower.
~500hp or near.
Look at the amount of work required to compress the air 2x @ 500cfm.
You're still talking the same roots blower, but with a big-ass electric motor too.
Change "roots" to any other type, ant it's the same.
neodymium motors, with low friction bearings could actually work...
The full boost at startup is probably do-able otherwise; you could use a clutch setup on the blower spindle and a "starter motor" to run the blower up to speed before launch, and let the engine take over as it catches up.
Red '96 Cougar XR-7 240k mi. '02 4R70W, PST DS : '03 PI engine, 04 maf, 24lb injectors, 2.5" exhaust, '02 4r70w + Jmod, DirtyD0g TC + cooler + 3/8" lines, 255 walbro fp. Alpine system.
Black '96 Cougar XR-7 (Lazarus) 210k mi PI Intake, '02 4R70W, Jmod, PST DS, GrogTune, Konis, Mark LCA+Poly, racecougar Custom Engine Chain, and JL and racecougar Bracing.
Black '97 Tbird Limited Edition, '02 4R70W, 255 walbro, PST DS, PBR Brakes&SS lines, Toicko Blues & Springs, GrogTune.
"War Is Peace. Freedom Is Slavery. Ignorance Is Strength." - George Orwell.
Truth Isn't Truth. - Rudy Giuliani, 2018 Award winner, “Most Outrageous Diversion” by MSNBC for this quote