* Gear ratios: Different rear-end gear ratios will significantly impact top speed. A numerically higher gear ratio (e.g., 3.73) will result in a lower top speed than a numerically lower gear ratio (e.g., 3.42).
* Tire size: Larger diameter tires will lower the top speed compared to smaller tires.
* Aerodynamics: Modifications like a camper shell or other add-ons will affect the vehicle's aerodynamic drag and thus its top speed.
* Vehicle condition: A well-maintained engine will perform better than one that is not.
* Load: The weight carried by the truck will also affect its top speed.
While a stock 2000 Silverado 1500 5.3L might *electronically* be limited to around 90-100 mph (depending on the specific configuration), reaching that speed depends on the factors mentioned above. Trying to reach a vehicle's maximum speed is also not recommended due to safety concerns.
