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Diesel piston sizes? - Trains Magazine

Author

Ava Hudson

Updated on April 07, 2026

Here's the dimensions of which I'm aware:

EMD 567 - 8 1/2" bore and 10" stroke

EMD 645 - 9 1/16" bore and 10" stroke

EMD 710 - 9 1/16" bore and 11" stroke

Alco 244, 251 and GE FDL - 9" bore and 10 1/2" stroke

Baldwin - 12 3/4" bore and 15 3/4" stroke, last built in 1956.

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