U.S.-designed cars that borrowed Ford, GM, or Chrysler V8s—from Sunbeam and Jensen to Iso, De Tomaso, and Koenigsegg—plus what each swap meant for performance, style, and history.

Although Vortec engines fall under the "LS" branding, they aren't actually the exact same as more traditional LS engines made by General Motors.

Blacked-out 1967 C10 pairs Action Line heritage with a 416ci twin-turbo LS3 built for extreme street performance.