6625-4185 401 AMC V8 FX Series -28cc Dish Top AMC Forged Piston Set 4.185 inch bore Pin Dia.: 1" Comp Height: 1.5"405 AMC V8, FX, Comp Height: 1. 5, 28cc Dish Top, PIN: ", Full Floating or Press Fit, Ring Groove: 1. 2 1. 2 3MM, Stroke: 3. 680", ROD: 5. 858, Approx Comp Ratio: 50cc 10. 53, 54cc 10. 12, 58cc 9. 73 Effective June 15th 2026, These V8 AMC ring grooves have been updated to the new specifications of 1. 2 1. 2 3mm. Parts manufactured prior to this date feature ring grooves with dimensions of 1 16 1 16 3 16.
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6625-4185 401 AMC V8 FX Series -28cc Dish Top AMC Forged Piston Set 4.185 inch bore Pin Dia.: 1" Comp Height: 1.5"