Answer
Oct 17, 2024 - 08:06 PM
The Borg Warner 72C transmission is typically rated for engines producing up to 450 horsepower and about 600 lb-ft of torque. It’s commonly paired with engines like small-block V8s (e.g., GM 5.7L) or inline-6 diesels in recreational powerboats. However, the actual engine size you can mount depends on several factors like the boat’s weight, hull design, and operating conditions.
The 72C is designed to handle engines in the 2,000 to 4,000 RPM range and can handle moderate loads under normal use. Going beyond these limits—such as pairing it with high-torque diesel engines or heavily modified gas engines—can cause issues like overheating, clutch slippage, and gear damage. For example, mounting an engine with more than 600 lb-ft of torque, like a high-performance diesel or a supercharged gas engine, would likely overwork the transmission, causing it to fail prematurely without additional upgrades like better cooling systems.
In short, while the 72C can handle a decent amount of power, it’s best not to go overboard. If you're wondering how much is too much—well, if you think you're pushing the limits, you probably are. 😅
