Heartbeat

Livernois Motorsports took the already‑rare Pontiac G8 GXP and transformed it into a one‑of‑a‑kind, Heartbeat‑powered monster. What started as a simple blower upgrade evolved into a full‑scale engineering feat: a custom‑adapted Magnuson Heartbeat supercharger, a 419ci stroker LS3, a return‑style fuel system, methanol injection, and countless hand‑fabricated components to make it all work under the G8’s skin. The result is a brutally efficient, cool‑running, 733‑wheel‑horsepower street car with manners, muscle, and craftsmanship you won’t find anywhere else. Below is a visual deep dive into the precision, problem‑solving, and sheer ingenuity that brought this build to life.

Read more about the entire build at GM EFI: Livernois Motorsports’ G8 GXP “Heart” Transplant