Junkyard Empire - Season 4

When Andy Cohen tries to convert an old Dodge pick-up into a vintage Power Wagon, his dad Bobby hits the roof. So it's up to Chris and Jeff to turn this rust bucket into gold. Then Andy buys a German military truck for a crazy advertising scheme.

Andy Cohen and dad Bobby treat their employees as members of the family. So when Tim's son wants a bigger truck, they happily hook him up. But it'll take a lot to turn a wrecked K-9 explosives police wagon into a camo-wrapped hunting truck.

When Bobby Cohen spots a rusty British Cab at the junkyard, he vows to do what he can to save it. His son, Andy, thinks he's crazy and decides to make a big investment in a high dollar Lamborghini Murcielago to recoup the money he worries Bobby will lose.

Andy's taking a 2010 Dodge Viper back to muscle car glory. To make its V10 engine roar again means all hands on deck. Then Andy's fixing up a 1950 fire truck for the local firehouse. Money's tight so Andy gets creative to put Big Red back on the road.

Andy gets his hands on an '85 Mustang SVO, so he tries to transplant a modern Ford Ecoboost engine into a car built around an outdated 2.3-liter motor. The guys get started on a tribute to Andy's favorite car from the 70s: the 1970 GTO Judge.

When Andy finally scores the only wire harness in the country that can marry his SVO Mustang to a new EcoBoost engine, he pressures Blair to bring it to life; George cuts an F350 in half to create the first single cab short bed diesel pick-up truck.

Dave Jensen asks Andy to help him restore his dad's 1964 Mustang, but the project is more than what Andy bargained for. Andy's girlfriend wants him to sell her underpowered Jeep. But when he improves the gear system, she throws a wrench in his plans.

Andy Cohen decides to transplant a Dodge Hell Cat engine into his classic Plymouth Barracuda. But even his best guys can't promise it'll work. Also, Bobby tries to salvage two beat-up ATVs without losing any money.

Andy's new school meets old school Barracuda build keeps hitting setbacks; Dave can't catch a break and morale hits a new low; Tommy's bringing some retro-cool to a junked helicopter; a '71 Chevy Blazer gets a big power boost.

When Andy decides to take another crack at the world speed record for tow trucks in his Racing Wrecker, Bobby plans to take him on in a 1979 Zephyr with a hot new engine. Neither expects a third racer to show up with a sleeper that wakes everyone up.

Andy Cohen and his dad, Bobby, live by the motto that cars create memories, and they're about to restore a couple of classics. One is a Jeep Wrangler that's an American icon; the other is a 1986 Monte Carlo – once known as "The Heartbeat of America."

Andy wants to squeeze a Hemi engine into a Jeep Wrangler for a power boost, and there's no end to what could go wrong. Jeff's reviving an '86 RX-7 with a Corvette LT1 motor, and Tim's rehabbing a trashed Boston Whaler for a high seas adventure.