Rat Where It's Needed. For a combination of power and visual impact, it's hard to beat a Chevy big-block. The 454 Rat motor in the Green Machine was machined to 468 cubic inches.

To create a rat rod out of a hot rod, you need to inflict deliberate, controlled damage upon it with the ultimate goal of creating something rugged and lived-in. It's kind of like acid-washing jeans.