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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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419 FE Ford, FX, Comp Height: 1.674, -10cc Dish Top, PIN: .975", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.984", ROD: 6.489, Approx Comp Ratio: 65cc-11.27, 72cc-10.47, 76cc-10.08 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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417 FE Ford, FX, Comp Height: 1.674, -10cc Dish Top, PIN: .975", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.984", ROD: 6.489, Approx Comp Ratio: 65cc-11.22, 72cc-10.43, 76cc-10.03 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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411 FE Ford, FX, Comp Height: 1.674, -10cc Dish Top, PIN: .975", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.984", ROD: 6.489, Approx Comp Ratio: 65cc-11.09, 72cc-10.31, 76cc-9.92 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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439 FE Ford, FX, Comp Height: 1.674, -5cc Flat Top , PIN: .975", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.984", ROD: 6.489, Approx Comp Ratio: 65cc-12.38, 72cc-11.45, 76cc-11 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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435 FE Ford, FX, Comp Height: 1.674, -5cc Flat Top , PIN: .975", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.984", ROD: 6.489, Approx Comp Ratio: 65cc-12.28, 72cc-11.38, 76cc-10.9 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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433 FE Ford, FX, Comp Height: 1.674, -5cc Flat Top , PIN: .975", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.984", ROD: 6.489, Approx Comp Ratio: 65cc-12.23, 72cc-11.33, 76cc-10.86 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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427 FE Ford, FX, Comp Height: 1.674, -5cc Flat Top , PIN: .975", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.984", ROD: 6.489, Approx Comp Ratio: 65cc-12.1, 72cc-11.21, 76cc-10.74 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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423 FE Ford, FX, Comp Height: 1.674, -5cc Flat Top , PIN: .975", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.984", ROD: 6.489, Approx Comp Ratio: 65cc-12.02, 72cc-11.11, 76cc-10.67 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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419 FE Ford, FX, Comp Height: 1.674, -5cc Flat Top , PIN: .975", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.984", ROD: 6.489, Approx Comp Ratio: 65cc-11.91, 72cc-11.03, 76cc-10.57 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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417 FE Ford, FX, Comp Height: 1.674, -5cc Flat Top , PIN: .975", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.984", ROD: 6.489, Approx Comp Ratio: 65cc-11.88, 72cc-10.99, 76cc-10.53 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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411 FE Ford, FX, Comp Height: 1.674, -5cc Flat Top , PIN: .975", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.984", ROD: 6.489, Approx Comp Ratio: 65cc-11.73, 72cc-10.86, 76cc-10.41 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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402 FE Ford, FX, Comp Height: 1.775, -16cc Dish Top, PIN: .975", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.784", ROD: 6.489, Approx Comp Ratio: 65cc-10.19, 72cc-9.52, 76cc-9.18 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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398 FE Ford, FX, Comp Height: 1.775, -16cc Dish Top, PIN: .975", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.784", ROD: 6.489, Approx Comp Ratio: 65cc-10.1, 72cc-9.43, 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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396 FE Ford, FX, Comp Height: 1.775, -16cc Dish Top, PIN: .975", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.784", ROD: 6.489, Approx Comp Ratio: 65cc-10.05, 72cc-9.4, 76cc-9.06 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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392 FE Ford, FX, Comp Height: 1.775, -16cc Dish Top, PIN: .975", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.784", ROD: 6.489, Approx Comp Ratio: 65cc-9.97, 72cc-9.32, 76cc-8.99 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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390 FE Ford, FX, Comp Height: 1.775, -16cc Dish Top, PIN: .975", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.784", ROD: 6.489, Approx Comp Ratio: 65cc-9.93, 72cc-9.28, 76cc-8.95 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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