The Biscayne in these photos somehow escaped the sleeper trend, but the engine under the hood has already been swapped. Figuring out the story of this car is easy.

In 1966, Chevy unleashed its new high-performance L72 427 big-block V8 and when fitted inside the Biscayne's engine bay, it gave birth to an outrageous sleeper ...

In our estimation, cars like the Chevrolet Biscayne are the purest expressions of the sleeper ethos, as not even the manufacturer intended for them to boast that kind of performance under the hood.

Stuff one of those in a plebeian Biscayne four-door and you’ll have yourself an unsuspecting sleeper. Truth be told, this 1965 Biscayne in Hemmings is likely not an original big-block car, but ...

Jason France’s 1964 Biscayne Is a Beige, 409-Powered Sleeper. Ro McGonegal Writer Wes Allison Photographer Mar 24, 2017. See All 54 Photos.

Jason France’s 1964 Biscayne Is a Beige, 409-Powered Sleeper. Ro McGonegal Writer Wes Allison Photographer Mar 24, 2017. See All 54 Photos.