Starting from scratch, and building the engine so it'll last, is IMO not possible at that price point...
Figure around $10 per HP....carb to pan, fan to flywheel...
The engine in the race car, which is a conservative 400hp, cost 4500.00 to build back in '95, exclusive of cores but including torque converter.
Build a good stock-based engine for under 2K and add nitrous...I know it's not on your list but it is the easiest way. You might be able to get 1 hp/ci, naturally aspirated, within your budget but you might cut some longevity corners getting there...
Figure around $10 per HP....carb to pan, fan to flywheel...
The engine in the race car, which is a conservative 400hp, cost 4500.00 to build back in '95, exclusive of cores but including torque converter.
Build a good stock-based engine for under 2K and add nitrous...I know it's not on your list but it is the easiest way. You might be able to get 1 hp/ci, naturally aspirated, within your budget but you might cut some longevity corners getting there...