Thanks all for the suggestions thus far!
Just to summarize so far:
- 454 Flywheel [
https://www.summitracing.com/parts/r...ake/chevrolet]
- Clutch (maybe, not sure on condition of existing clutch, might replace while it's separated)
- Fuel pump
- Pilot bearing [
https://www.summitracing.com/parts/ram-bu656#overview] (not entirely sure this is correct)
- Big block headers
- Radiator (maybe)
- Heavy duty battery cables (optional)
@Dead Parrot My existing 350 has headers and bolt on glass packs. I'll either bolt the glass packs onto big block headers or actually do normal pipes and muffler.
As for radiator, I actually just swapped in a new radiator due to a leak on the OEM. It's a champion CC161 3 row radiator. Will this work or do I need something bigger?
Good suggestion on battery cables and engine bay wiring. I've actually been considering completely rebuilding the engine harnesses. I did redo/patch them a few years ago so it's not too bad currently.