28 Jun 2026, Sun

A Yukon-Sourced L83 Powers This 1967 Firebird

Image via Luis Morales/Facebook Marketplace

Engine swaps come in all varieties, but this 1967 Pontiac Firebird running an L83 pulled from a 2019 GMC Yukon is a genuinely thought-provoking choice. Rather than dropping in a typical crate LS, the owner took a different and less conventional path.

The unusual donor engine gives the classic muscle car a distinctive twist. While purists may raise an eyebrow, the swap reflects the creative, sometimes unexpected directions enthusiasts take when modernizing a vintage Pontiac.