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Olds 442

Small Block Oldsmobile

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STEP 1: Choose Cyl Bore Size Show all STEP 1: Choose Cyl Bore Size
STEP 2: Piston Series Show all STEP 2: Piston Series
STEP 3: Connecting Rod Length Show all STEP 3: Connecting Rod Length
STEP 4: Piston Pin Diameter Show all STEP 4: Piston Pin Diameter
STEP 6: Top - Comp. Ratio Show all STEP 6: Top - Comp. Ratio
Compression Height Show all Compression Height
Crankshaft Stroke Show all Crankshaft Stroke
6025-4057 350 Small Block Oldsmobile FX Series -5cc Flat Top Oldsmobile Forged Piston Set 4.057 inch bore Pin Dia.: 0.98 6025-4057 350 Small Block Oldsmobile FX Series -5cc Flat Top Oldsmobile Forged Piston Set 4.057 inch bore Pin Dia.: 0.98
from $749.95
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350 Small Block Oldsmobile, FX, Comp Height: 1.625, -5cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.385", ROD: 6, Approx Comp Ratio: 64cc-10.25, 68cc-9.8, 70cc-9.6 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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6025-4080 350 Small Block Oldsmobile FX Series -5cc Flat Top Oldsmobile Forged Piston Set 4.080 inch bore Pin Dia.: 0.98 6025-4080 350 Small Block Oldsmobile FX Series -5cc Flat Top Oldsmobile Forged Piston Set 4.080 inch bore Pin Dia.: 0.98
from $749.95
from $749.95
354 Small Block Oldsmobile, FX, Comp Height: 1.625, -5cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.385", ROD: 6, Approx Comp Ratio: 64cc-10.36, 68cc-9.89, 70cc-9.68 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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6025-4100 350 Small Block Oldsmobile FX Series -5cc Flat Top Oldsmobile Forged Piston Set 4.100 inch bore Pin Dia.: 0.98 6025-4100 350 Small Block Oldsmobile FX Series -5cc Flat Top Oldsmobile Forged Piston Set 4.100 inch bore Pin Dia.: 0.98
from $749.95
from $749.95
358 Small Block Oldsmobile, FX, Comp Height: 1.625, -5cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.385", ROD: 6, Approx Comp Ratio: 64cc-10.44, 68cc-9.99, 70cc-9.77 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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6025-4125 350 Small Block Oldsmobile FX Series -5cc Flat Top Oldsmobile Forged Piston Set 4.125 inch bore Pin Dia.: 0.98 6025-4125 350 Small Block Oldsmobile FX Series -5cc Flat Top Oldsmobile Forged Piston Set 4.125 inch bore Pin Dia.: 0.98
from $749.95
from $749.95
362 Small Block Oldsmobile, FX, Comp Height: 1.625, -5cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.385", ROD: 6, Approx Comp Ratio: 64cc-10.55, 68cc-10.07, 70cc-9.86 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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6025-4155 350 Small Block Oldsmobile FX Series -5cc Flat Top Oldsmobile Forged Piston Set 4.155 inch bore Pin Dia.: 0.98 6025-4155 350 Small Block Oldsmobile FX Series -5cc Flat Top Oldsmobile Forged Piston Set 4.155 inch bore Pin Dia.: 0.98
from $749.95
from $749.95
367 Small Block Oldsmobile, FX, Comp Height: 1.625, -5cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.385", ROD: 6, Approx Comp Ratio: 64cc-10.66, 68cc-10.180, 70cc-9.96 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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6025-4165 350 Small Block Oldsmobile FX Series -5cc Flat Top Oldsmobile Forged Piston Set 4.165 inch bore Pin Dia.: 0.98 6025-4165 350 Small Block Oldsmobile FX Series -5cc Flat Top Oldsmobile Forged Piston Set 4.165 inch bore Pin Dia.: 0.98
from $749.95
from $749.95
369 Small Block Oldsmobile, FX, Comp Height: 1.625, -5cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.385", ROD: 6, Approx Comp Ratio: 64cc-10.69, 68cc-10.220, 70cc-10.01 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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6025-4185 350 Small Block Oldsmobile FX Series -5cc Flat Top Oldsmobile Forged Piston Set 4.185 inch bore Pin Dia.: 0.98 6025-4185 350 Small Block Oldsmobile FX Series -5cc Flat Top Oldsmobile Forged Piston Set 4.185 inch bore Pin Dia.: 0.98
from $749.95
from $749.95
373 Small Block Oldsmobile, FX, Comp Height: 1.625, -5cc Flat Top , PIN: .98", Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.385", ROD: 6, Approx Comp Ratio: 64cc-10.8, 68cc-10.320, 70cc-10.09 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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