Video: 427ci LS7 Makes 632 Horsepower Before Getting Twin Turbos

Late Model Engines has a customer with a twin-turbo LS engine already making 1,100 horsepower at the tires. Now he wants to “turn it up.” So this 427ci LS7 built around a solid-deck RHS block is making 632 horsepower without the turbos. Add the boost and he could go well over 1,200. Check it out!