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With the C7 Chevrolet Corvette officially retired, it doesn’t mean that all the trims would find a place in a museum just yet. As it turns out, the bonkers ZR1 Corvette might serve the nation after all. The U.S. Coast Guard has ordered two LT5 V8s from Chevrolet, which are the same ones that lurk under the hood of every C7 ZR1 Corvette.
Heart Of The Beast
The LT5 is the designation given to GM’s 6.2L supercharged V8. This was exclusively used by Chevrolet as the powerhouse for the ZR1 Corvette. The engine churned out 755 horsepower and 715 lb-ft of torque, all channeled to the rear wheels through a 7-speed manual transmission developed by Tremec.
The engine was first seen in C4 Corvettes back in 1994. As a small-block V8, Chevrolet increased the displacement from 5.7L to 6.2L, keeping the original Over Head Valves(OHV) design. Additions included a 2.6L Eaton supercharger with an improved intercooler and a direct port fuel injection system.
Intensified For Law Enforcement
Katech Performance is responsible for fulfilling the order. If you are unfamiliar with the name, these are the guys that supply engine and powertrain support to the Corvette Racing Team. Based in Michigan, the firm will modify the LT5 V8 in accordance with Coast Guard requirements. Named the LT5 Marine AirBoats, only two such examples are confirmed to be built so far.
Although the LT5 is powerful enough in itself, Katech Performance will turn it up a notch. According to their Facebook page, “These engines reach 800 hp on 91 octanes and engine data is displayed to the boat operator via a Bosch Motorsport DDU9 integrated with the factory ECU.” Moreover, the ECU has been remapped to improve engine response and more insulation is there to resist aquatic conditions.