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Wheels up Fox body Mustang with DSS Racing power.

Ford

STEP 6: Top - Comp. Ratio Show all STEP 6: Top - Comp. Ratio
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428 Small Block Ford 351W, FX, Comp Height: 1.145, -4cc Flat Top , PIN: .927", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.170", ROD: 6.25, Approx Comp Ratio: 58cc-13.44, 64cc-12.48, 70cc-11.64
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419 Small Block Ford 351W, FX, Comp Height: 1.145, -4cc Flat Top , PIN: .927", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.170", ROD: 6.25, Approx Comp Ratio: 58cc-13.21, 64cc-12.26, 70cc-11.43
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426 Small Block Ford 351W, FX, Comp Height: 1.145, -4cc Flat Top , PIN: .927", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.170", ROD: 6.25, Approx Comp Ratio: 58cc-13.41, 64cc-12.43, 70cc-11.59
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469 FE Ford, FX, Comp Height: 1.335, -28cc Dish Top, PIN: .99", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.7, Approx Comp Ratio: 65cc-10.41, 72cc-9.82, 76cc-9.5 NOTE: Effective July 3, 2025, all FE Ford 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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464 FE Ford, FX, Comp Height: 1.335, -28cc Dish Top, PIN: .99", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.7, Approx Comp Ratio: 65cc-10.32, 72cc-9.72, 76cc-9.42 NOTE: Effective July 3, 2025, all FE Ford 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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462 FE Ford, FX, Comp Height: 1.335, -28cc Dish Top, PIN: .99", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.7, Approx Comp Ratio: 65cc-10.28, 72cc-9.68, 76cc-9.38 NOTE: Effective July 3, 2025, all FE Ford 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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455 FE Ford, FX, Comp Height: 1.335, -28cc Dish Top, PIN: .99", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.7, Approx Comp Ratio: 65cc-10.16, 72cc-9.57, 76cc-9.27 NOTE: Effective July 3, 2025, all FE Ford 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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451 FE Ford, FX, Comp Height: 1.335, -28cc Dish Top, PIN: .99", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.7, Approx Comp Ratio: 65cc-10.08, 72cc-9.5, 76cc-9.19 NOTE: Effective July 3, 2025, all FE Ford 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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447 FE Ford, FX, Comp Height: 1.335, -28cc Dish Top, PIN: .99", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.7, Approx Comp Ratio: 65cc-10.01, 72cc-9.43, 76cc-9.13 NOTE: Effective July 3, 2025, all FE Ford 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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445 FE Ford, FX, Comp Height: 1.335, -28cc Dish Top, PIN: .99", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.7, Approx Comp Ratio: 65cc-9.97, 72cc-9.4, 76cc-9.1 NOTE: Effective July 3, 2025, all FE Ford 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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438 FE Ford, FX, Comp Height: 1.335, -28cc Dish Top, PIN: .99", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.7, Approx Comp Ratio: 65cc-9.84, 72cc-9.27, 76cc-8.98 NOTE: Effective July 3, 2025, all FE Ford 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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469 FE Ford, FX, Comp Height: 1.335, -16cc Dish Top, PIN: .99", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.7, Approx Comp Ratio: 65cc-11.68, 72cc-10.9, 76cc-10.5 NOTE: Effective July 3, 2025, all FE Ford 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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464 FE Ford, FX, Comp Height: 1.335, -16cc Dish Top, PIN: .99", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.7, Approx Comp Ratio: 65cc-11.56, 72cc-10.8, 76cc-10.42 NOTE: Effective July 3, 2025, all FE Ford 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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462 FE Ford, FX, Comp Height: 1.335, -16cc Dish Top, PIN: .99", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.7, Approx Comp Ratio: 65cc-11.52, 72cc-10.77, 76cc-10.380 NOTE: Effective July 3, 2025, all FE Ford 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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455 FE Ford, FX, Comp Height: 1.335, -16cc Dish Top, PIN: .99", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.7, Approx Comp Ratio: 65cc-11.38, 72cc-10.62, 76cc-10.25 NOTE: Effective July 3, 2025, all FE Ford 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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451 FE Ford, FX, Comp Height: 1.335, -16cc Dish Top, PIN: .99", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.7, Approx Comp Ratio: 65cc-11.31, 72cc-10.56, 76cc-10.18 NOTE: Effective July 3, 2025, all FE Ford 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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