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What should the engine compression for a 440 engine?

The compression ratio of a 440 engine can vary depending on the specific model and year of the engine. Generally, the compression ratio for a 440 engine will range from 8.2:1 to 10.5:1.

For example, the 1970-1971 440 Six Pack engine had a compression ratio of 10.5:1, while the 1972-1974 440 Magnum engine had a compression ratio of 8.2:1.