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300 L6 Ford 6 Cylinder, FX, Comp Height: 1.2, -25cc Dish Top, PIN: .912", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.980", ROD: 6.8, Approx Comp Ratio: 65cc-9.35, 72cc-8.79, 76cc-8.5 NOTE: Most L6‑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.
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from $679.95
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305 L6 Ford 6 Cylinder, FX, Comp Height: 1.2, -25cc Dish Top, PIN: .912", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.980", ROD: 6.8, Approx Comp Ratio: 65cc-9.47, 72cc-8.91, 76cc-8.62 NOTE: Most L6‑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.
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from $679.95
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306 L6 Ford 6 Cylinder, FX, Comp Height: 1.2, -25cc Dish Top, PIN: .912", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.980", ROD: 6.8, Approx Comp Ratio: 65cc-9.5, 72cc-8.93, 76cc-8.63 NOTE: Most L6‑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.
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from $679.95
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from $679.95
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309 L6 Ford 6 Cylinder, FX, Comp Height: 1.2, -25cc Dish Top, PIN: .912", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.980", ROD: 6.8, Approx Comp Ratio: 65cc-9.57, 72cc-9, 76cc-8.71 NOTE: Most L6‑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.
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from $749.95
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454 Big Block Oldsmobile, FX, Comp Height: 1.75, -12cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.735, Approx Comp Ratio: 72cc-11.03, 75cc-10.72, 77cc-10.51 Effective June 15th 2026, These Oldsmobile 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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461 Big Block Oldsmobile, FX, Comp Height: 1.75, -12cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.735, Approx Comp Ratio: 72cc-11.16, 75cc-10.85, 77cc-10.65 Effective June 15th 2026, These Oldsmobile 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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463 Big Block Oldsmobile, FX, Comp Height: 1.75, -12cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.735, Approx Comp Ratio: 72cc-11.21, 75cc-10.89, 77cc-10.68 Effective June 15th 2026, These Oldsmobile 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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468 Big Block Oldsmobile, FX, Comp Height: 1.75, -12cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.735, Approx Comp Ratio: 72cc-11.3, 75cc-10.98, 77cc-10.78 Effective June 15th 2026, These Oldsmobile 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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454 Big Block Oldsmobile, FX, Comp Height: 1.75, -19cc Dish Top, PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.735, Approx Comp Ratio: 72cc-10.32, 75cc-10.05, 77cc-9.88 Effective June 15th 2026, These Oldsmobile 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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461 Big Block Oldsmobile, FX, Comp Height: 1.75, -19cc Dish Top, PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.735, Approx Comp Ratio: 72cc-10.45, 75cc-10.18, 77cc-10 Effective June 15th 2026, These Oldsmobile 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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463 Big Block Oldsmobile, FX, Comp Height: 1.75, -19cc Dish Top, PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.735, Approx Comp Ratio: 72cc-10.49, 75cc-10.22, 77cc-10.04 Effective June 15th 2026, These Oldsmobile 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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from $749.95
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468 Big Block Oldsmobile, FX, Comp Height: 1.75, -19cc Dish Top, PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.250", ROD: 6.735, Approx Comp Ratio: 72cc-10.59, 75cc-10.3, 77cc-10.13 Effective June 15th 2026, These Oldsmobile 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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from $749.95
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481 Big Block Oldsmobile, FX, Comp Height: 1.26, -12cc Flat Top , PIN: .99", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.500", ROD: 7.1, Approx Comp Ratio: 72cc-11.62, 75cc-11.3, 77cc-11.07 Effective June 15th 2026, These Oldsmobile 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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488 Big Block Oldsmobile, FX, Comp Height: 1.26, -12cc Flat Top , PIN: .99", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.500", ROD: 7.1, Approx Comp Ratio: 72cc-11.76, 75cc-11.43, 77cc-11.22 Effective June 15th 2026, These Oldsmobile 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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from $749.95
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490 Big Block Oldsmobile, FX, Comp Height: 1.26, -12cc Flat Top , PIN: .99", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.500", ROD: 7.1, Approx Comp Ratio: 72cc-11.8, 75cc-11.47, 77cc-11.24 Effective June 15th 2026, These Oldsmobile 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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from $749.95
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from $749.95
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495 Big Block Oldsmobile, FX, Comp Height: 1.26, -12cc Flat Top , PIN: .99", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4.500", ROD: 7.1, Approx Comp Ratio: 72cc-11.89, 75cc-11.56, 77cc-11.35 Effective June 15th 2026, These Oldsmobile 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.