Waking Up the Aztek

When most people think about the Pontiac Aztek, “performance” isn’t the first thing that comes to mind. But that’s what makes building one so fun — nobody expects it. The stock 3.4L V6 made around 185 horsepower, which is adequate for commuting, but falls flat compared to modern SUVs or performance crossovers. This is where the project begins.

Engine Swap Options

• Budget Route:
  Swap in a later 3.5L or 3.9L GM V6 from an Uplander or G6. These are relatively cheap in junkyards and bump power up to ~200–240 hp without heavy modifications.
  Estimated cost: $500–$1,500 (used engine + basic install).

• Mid-Range Route:
  The legendary 3800 Supercharged V6 (L67) from Pontiac Grand Prix GTPs or Buick Regals. Reliable, tunable, and delivers ~240–260 hp stock with huge aftermarket support.
  Estimated cost: $1,500–$3,000 (engine, wiring, labor).

• Extreme Route:
  LS-based V8 swap (5.3L or 6.0L). This transforms the Aztek into a true sleeper SUV, capable of 350–500+ hp depending on the build. Fabrication is required, but the payoff is unmatched.
  Estimated cost: $5,000–$15,000+.

Transmission Choices

• Stick with the 4T65E automatic for budget builds (cheap, readily available, but not bulletproof).

• Upgrade to a manual swap using parts from other GM cars (harder but rewarding for enthusiasts).

• Extreme builds can benefit from a 4L80E automatic or aftermarket performance transmission to handle big power.

Forced Induction

• Turbocharging: Good for custom setups, can push a built V6 or LS into serious horsepower.

• Supercharging: Easier on drivability, especially if using the 3800 SC platform.

• Reasoning: Forced induction adds fun factor and uniqueness — turning the Aztek from “ugly duckling” to “boosted beast.”

Costs vary widely depending on whether you source parts new, used, or salvage them yourself. Labor and fabrication can make or break a budget.