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481 Big Block Oldsmobile, FX, Comp Height: 1.26, -19cc Dish 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-10.87, 75cc-10.59, 77cc-10.41 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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488 Big Block Oldsmobile, FX, Comp Height: 1.26, -19cc Dish 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, 75cc-10.71, 77cc-10.53 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, -19cc Dish 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-11.04, 75cc-10.75, 77cc-10.57 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, -19cc Dish 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-11.14, 75cc-10.84, 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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from $749.95
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400 Small Block Oldsmobile, FX, Comp Height: 1.625, -12cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.975", ROD: 7, Approx Comp Ratio: 64cc-10.73, 68cc-10.29, 70cc-10.07 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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from $749.95
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400 Big Block Oldsmobile, FX, Comp Height: 1.625, -12cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.975", ROD: 7, Approx Comp Ratio: 72cc-9.88, 75cc-9.61, 77cc-9.43 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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406 Small Block Oldsmobile, FX, Comp Height: 1.625, -12cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.975", ROD: 7, Approx Comp Ratio: 64cc-10.85, 68cc-10.42, 70cc-10.21 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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406 Big Block Oldsmobile, FX, Comp Height: 1.625, -12cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.975", ROD: 7, Approx Comp Ratio: 72cc-10, 75cc-9.72, 77cc-9.54 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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408 Small Block Oldsmobile, FX, Comp Height: 1.625, -12cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.975", ROD: 7, Approx Comp Ratio: 64cc-10.9, 68cc-10.46, 70cc-10.24 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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408 Big Block Oldsmobile, FX, Comp Height: 1.625, -12cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.975", ROD: 7, Approx Comp Ratio: 72cc-10.04, 75cc-9.76, 77cc-9.59 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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412 Small Block Oldsmobile, FX, Comp Height: 1.625, -12cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.975", ROD: 7, Approx Comp Ratio: 64cc-10.98, 68cc-10.54, 70cc-10.33 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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412 Big Block Oldsmobile, FX, Comp Height: 1.625, -12cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.975", ROD: 7, Approx Comp Ratio: 72cc-10.13, 75cc-9.83, 77cc-9.66 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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425 Small Block Oldsmobile, FX, Comp Height: 1.625, -12cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.975", ROD: 7, Approx Comp Ratio: 64cc-11.28, 68cc-10.8, 70cc-10.59 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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425 Big Block Oldsmobile, FX, Comp Height: 1.625, -12cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.975", ROD: 7, Approx Comp Ratio: 72cc-10.39, 75cc-10.1, 77cc-9.9 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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431 Small Block Oldsmobile, FX, Comp Height: 1.625, -12cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.975", ROD: 7, Approx Comp Ratio: 64cc-11.4, 68cc-10.94, 70cc-10.71 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.
Regular price
from $749.95
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from $749.95
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Unit price
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431 Big Block Oldsmobile, FX, Comp Height: 1.625, -12cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.975", ROD: 7, Approx Comp Ratio: 72cc-10.5, 75cc-10.21, 77cc-10.02 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.