Will a Chevy 350 Tbi long block work for a boat motor?

Yes, a Chevy 350 TBI long block can work for a boat motor, provided it is compatible with the marine components such as the exhaust, cooling system, and ignition setup. However, it's crucial to ensure that the engine is properly marinized to prevent issues like corrosion and overheating. Additionally, modifications might be needed to meet marine safety standards and performance requirements. Always consult with a marine mechanic for the best results.