A refreshed Skylark debuted in 1968 on GM's new A-Body architecture. The old 340 cubic-inch engine was replaced by a 350 cube version that accompanied both 400 and 455 cubic-inch big block options that turned your Skylark into a Gran Sport. If you're not worried about nameplates, we have another option for you below.

From Ford Flathead to GM Gen V LT, and including everything in between like small-block and big-block Ford and Chevy, Gen III/IV LS, Coyote, Hemi, and more, we have the parts to coax more power out of the engine under the hood of your hot rod.