11/09/2026
This 2007 Pontiac Grand Prix GXP came into Brumley’s Automotive for some serious upgrades! Under the hood is the LS4 5.3L V8, and we gave it some extra personality with a Texas Speed ONDGAS Stage 1 cam.
While we were in there, we went through the engine with all new bearings, cleaned up the block, and gave the cylinders a fresh hone.
There’s just something about a cammed V8 that never gets old!
Brumley’s Automotive
Where performance meets precision.