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What kind of engine can you replace a 1984 4 cylinder fiero with?

The 1984 Pontiac Fiero's biggest limitation when it comes to engine swaps is its relatively small engine bay. While you *can* swap in a number of engines, it requires significant fabrication and modification in most cases. There's no simple "bolt-in" replacement.

Engines that have been successfully swapped into Fieros (with varying degrees of difficulty) include:

* Chevrolet Ecotec: A popular choice due to its relatively compact size and decent power output. Several kits and resources are available to aid in this swap.

* GM LS series (small block V8): This is a *very* common swap, but it's challenging. It often requires significant modifications to the firewall, suspension, and possibly the chassis itself. It also usually necessitates custom mounts and fabrication.

* Ford 4-cylinder engines (various): Some Ford four-cylinder engines, particularly older ones, might fit with significant work. The space constraints remain a challenge.

* Other 4-cylinder engines: Various other four-cylinder engines from different manufacturers have been used, but again, this almost always requires substantial custom work.

Important Considerations:

* Space limitations: The Fiero's engine bay is small. Larger engines will require extensive modifications.

* Weight distribution: Adding a significantly heavier engine will drastically alter the car's handling characteristics.

* Transmission: You'll likely need a new transmission compatible with your chosen engine.

* Wiring and electronics: Integrating the new engine's electronics into the Fiero's existing system can be complex.

* Cooling system: A larger engine may require a more robust cooling system.

In short: While many engines *can* be swapped into a 1984 Fiero, it's rarely a straightforward process. It involves significant mechanical skill, fabrication experience, and often the purchase of custom parts or kits. Research thoroughly the specific engine you're considering and carefully assess the complexity before undertaking such a project. Forums dedicated to Fiero modifications are invaluable resources for information and guidance.