Engine Swap VPI Calculator

Plan the swap before buying parts.

Select the chassis, enter the stock horsepower figures, and estimate the engine swap points added to its Swap VPI. Then account for every other modification on the finished car.

Interactive calculator

Build the estimate

Use the stock horsepower listed for each production engine. The chassis choices load from the current ChampCar swap database.

Choose the manufacturer of the chassis, not the incoming engine.
Select the exact model line shown in the swap list.
Year ranges can carry different SPV and Swap VPI values.
Factory-rated horsepower for the original chassis engine.
Factory-rated horsepower for the engine being installed.