stock 440 steel crank ,stock ly rods ,liter pistons could handle 600hp no problem not even working the block.i think if i built a small block that level it would be aftermarket stroker crank possibly steel crank scat rods. that is the price difference.but my 440 build i used scat rods i got off ebay brand new 180.00 dollars.my machinist really had to cut on the crank
