Technical Information: 273-318-340 V8: Bigend-journals 2.124"-2.125": Main-journals 2.4995"-2.5005": 360 V8 4” bore 1971-2003: Bigend-journals 2.124-2.125": Main-journals 2.8095”-2.8105": 383 V8 4.25” bore 1959-71 and 400 V8 1972-80: Bigend-journals 2.374”-2.375”. Main-journals 2.6245”-2.6255”:413 V8 4.188” bore 1959-77: Bigend journals 2.374”-2.375”: 426 V8 4.25” bore 1964-71 Hemi:Bigend-journals 2.374”-2.375: Main-journals 2.7495”-2.7505”: 440 V8 4.32” bore 1966-80: Bigend-journals 2.374”-2.375”: Main-journals 2.7495”-2.7505”