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Ford

STEP 6: Top - Comp. Ratio Show all STEP 6: Top - Comp. Ratio
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392 FE Ford, FX, Comp Height: 1.775, -5cc Flat 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-11.23, 72cc-10.39, 76cc-9.97 NOTE: Most FE‑series OEM connecting rods require narrowing at the pin end to achieve proper side clearance within the 2.5‑inch pin boss. Aftermarket rods are typic Thesey manufactured with a narrower profile and therefore do not require this modification. Effective July 7, 2025, These 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, -5cc Flat 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-11.18, 72cc-10.36, 76cc-9.93 NOTE: Most FE‑series OEM connecting rods require narrowing at the pin end to achieve proper side clearance within the 2.5‑inch pin boss. Aftermarket rods are typic Thesey manufactured with a narrower profile and therefore do not require this modification. Effective July 7, 2025, These 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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296 Ford Modular, FX, Comp Height: 1.17, -24cc Dish Top, PIN: .866", Full-Floating or Press Fit, Ring Groove: 1.5/1.5/3MM, Stroke: 3.649", ROD: 5.933, Approx Comp Ratio: 44cc-9.13, 50cc-8.52, 53cc-8.25 *
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294 Ford Modular, FX, Comp Height: 1.17, -24cc Dish Top, PIN: .866", Full-Floating or Press Fit, Ring Groove: 1.5/1.5/3MM, Stroke: 3.649", ROD: 5.933, Approx Comp Ratio: 44cc-9.08, 50cc-8.47, 53cc-8.21 *
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293 Ford Modular, FX, Comp Height: 1.17, -24cc Dish Top, PIN: .866", Full-Floating or Press Fit, Ring Groove: 1.5/1.5/3MM, Stroke: 3.649", ROD: 5.933, Approx Comp Ratio: 44cc-9.05, 50cc-8.44, 53cc-8.18 *
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289 Ford Modular, FX, Comp Height: 1.17, -24cc Dish Top, PIN: .866", Full-Floating or Press Fit, Ring Groove: 1.5/1.5/3MM, Stroke: 3.649", ROD: 5.933, Approx Comp Ratio: 44cc-8.94, 50cc-8.36, 53cc-8.1 *
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296 Ford Modular, FX, Comp Height: 1.17, -15cc Dish Top, PIN: .866", Full-Floating or Press Fit, Ring Groove: 1.5/1.5/3MM, Stroke: 3.649", ROD: 5.933, Approx Comp Ratio: 44cc-10.23, 50cc-9.47, 53cc-9.13 *
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294 Ford Modular, FX, Comp Height: 1.17, -15cc Dish Top, PIN: .866", Full-Floating or Press Fit, Ring Groove: 1.5/1.5/3MM, Stroke: 3.649", ROD: 5.933, Approx Comp Ratio: 44cc-10.19, 50cc-9.41, 53cc-9.08 *
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293 Ford Modular, FX, Comp Height: 1.17, -15cc Dish Top, PIN: .866", Full-Floating or Press Fit, Ring Groove: 1.5/1.5/3MM, Stroke: 3.649", ROD: 5.933, Approx Comp Ratio: 44cc-10.16, 50cc-9.38, 53cc-9.05 *
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289 Ford Modular, FX, Comp Height: 1.17, -15cc Dish Top, PIN: .866", Full-Floating or Press Fit, Ring Groove: 1.5/1.5/3MM, Stroke: 3.649", ROD: 5.933, Approx Comp Ratio: 44cc-10.03, 50cc-9.29, 53cc-8.94 *
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296 Ford Modular, FX, Comp Height: 1.17, -7cc Dish Top, PIN: .866", Full-Floating or Press Fit, Ring Groove: 1.5/1.5/3MM, Stroke: 3.649", ROD: 5.933, Approx Comp Ratio: 44cc-11.51, 50cc-10.54, 53cc-10.09 *
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294 Ford Modular, FX, Comp Height: 1.17, -7cc Dish Top, PIN: .866", Full-Floating or Press Fit, Ring Groove: 1.5/1.5/3MM, Stroke: 3.649", ROD: 5.933, Approx Comp Ratio: 44cc-11.44, 50cc-10.47, 53cc-10.05 *
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293 Ford Modular, FX, Comp Height: 1.17, -7cc Dish Top, PIN: .866", Full-Floating or Press Fit, Ring Groove: 1.5/1.5/3MM, Stroke: 3.649", ROD: 5.933, Approx Comp Ratio: 44cc-11.43, 50cc-10.44, 53cc-10.02 *
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289 Ford Modular, FX, Comp Height: 1.17, -7cc Dish Top, PIN: .866", Full-Floating or Press Fit, Ring Groove: 1.5/1.5/3MM, Stroke: 3.649", ROD: 5.933, Approx Comp Ratio: 44cc-11.29, 50cc-10.33, 53cc-9.9 *
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296 Ford Modular, FX, Comp Height: 1.17, -25cc Dish Top, PIN: .866", Full-Floating or Press Fit, Ring Groove: 1.5/1.5/3MM, Stroke: 3.649", ROD: 5.933, Approx Comp Ratio: 44cc-9.01, 50cc-8.43, 53cc-8.17 *
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294 Ford Modular, FX, Comp Height: 1.17, -25cc Dish Top, PIN: .866", Full-Floating or Press Fit, Ring Groove: 1.5/1.5/3MM, Stroke: 3.649", ROD: 5.933, Approx Comp Ratio: 44cc-8.97, 50cc-8.38, 53cc-8.12 *
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