Season 4 - Episode Guide

The crew transforms a 1958 Chevy Apache into a bad-ass Vintage Dirt Bike Hauler; Steve jumps at the chance to bring Evel Knievel's Formula 1 Dragster back to life.

With the delivery date for the ultimate Vintage Dirt Bike Hauler imminent, Steve pushes his crew to complete his vision; Welder Up's reputation for building the meanest and fastest rat rods is challenged.

Steve is asked to build a scary villain rat rod in three weeks and a vintage-inspired charity bike for military veterans in two weeks; Steve worries when the villain car frame takes longer than expected and the Vet Bike won't start.

Steve and the crew commit to meeting the original Superhero build time and delivering the Villain Rat Rod in three weeks; with no sign of a transmission, it doesn't look as though the crew will escape the clutches of this perilous deadline.

Steve takes on one of his funkiest projects ever when he agrees to build a crazy 70's-era gasser racecar for a Navy Vet. Also, Steve tries to make money by restoring and flipping a Prohibition-era bootlegger Model A truck to a Vegas police captain.

The Welder Up crew scramble to finish the 70's gasser, but they run into several problems while testing the car out. Also, Merlon plans a surprise gift for Steve to replace a bike he loved as a kid but lost.

When Steve is commissioned to build a spooky car, he digs up a haunted '55 Chevy and Justin and Travis battle to modify the cursed car; Steve and Merlon flip a Depression era Plymouth.

The Haunted Rod is cursed. The suspension and the engine don't fit, triggering major body work; and when the engine doesn't fire they miss the deadline. Steve flips a 1920 Old Wayne Gas Pump to off-set extra labor costs on the Haunted Rod.

Steve and the Welderup crew have to get creative when they're tasked with building an iron-worker themed rat rod that doubles as a work truck. Justin makes a big mistake and Steve then tries to flip a beat up '67 Coronet that he finds in a junkyard