6605-4080 360 AMC V8 FX Series -21cc Dish Top AMC Forged Piston Set 4.080 inch bore Pin Dia.: 0.931" Comp Height: 1.59"360 AMC V8, FX, Comp Height: 1. 59, 21cc Dish Top, PIN: . 931", Full Floating or Press Fit, Ring Groove: 1. 2 1. 2 3MM, Stroke: 3. 440", ROD: 5. 875, Approx Comp Ratio: 50cc 10. 26, 54cc 9. 82, 58cc 9. 43 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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6605-4080 360 AMC V8 FX Series -21cc Dish Top AMC Forged Piston Set 4.080 inch bore Pin Dia.: 0.931" Comp Height: 1.59"