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The propane-powered Gen VI 454ci Chevrolet big-block has been bored to 468 cubic inches and has been balanced and blueprinted. With such goodies as higher-flowing heads, Crane cam, midrise Chevy aluminum manifold, Speedway AHC block-hugger shorty headers and a 90-series Flowmaster, the engine has hit the dyno with a verified 420 horsepower and 430 lb-ft of torque. Mated to the big block is a TH400 transmission that has a B&M torque converter, Art Carr reverse manual valve body, and Derale cooler with fan. The transfer case is of the Stak Monster Box three-speed variety.

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