Small Block Oldsmobile

REQUIRED FIELD: Choose Cyl Bore Size First

• 4.000 in , 101.520 mm (1)
• 4.030 in , 102.281 mm (1)
• 4.040 in , 102.535 mm (1)
• 4.060 in , 103.043 mm (1)
• 4.125 in , 104.693 mm (1)
• 4.155 in , 105.454 mm (1)
• 4.165 in , 105.708 mm (1)
• 4.185 in , 106.215 mm (1)

Show all REQUIRED FIELD: Choose Cyl Bore Size First

Piston Top Aprox. Comp. Ratio

• -12cc Flat Top Oldsmobile

  Chamber	Comp Ratio
  64	10.73 to 1
  68	10.29 to 1
  70	10.07 to 1

  (1)

• -12cc Flat Top Oldsmobile

  Chamber	Comp Ratio
  64	10.85 to 1
  68	10.42 to 1
  70	10.21 to 1

  (1)

• -12cc Flat Top Oldsmobile

  Chamber	Comp Ratio
  64	10.9 to 1
  68	10.46 to 1
  70	10.24 to 1

  (1)

• -12cc Flat Top Oldsmobile

  Chamber	Comp Ratio
  64	10.98 to 1
  68	10.54 to 1
  70	10.33 to 1

  (1)

• -12cc Flat Top Oldsmobile

  Chamber	Comp Ratio
  64	11.28 to 1
  68	10.8 to 1
  70	10.59 to 1

  (1)

• -12cc Flat Top Oldsmobile

  Chamber	Comp Ratio
  64	11.4 to 1
  68	10.94 to 1
  70	10.71 to 1

  (1)

• -12cc Flat Top Oldsmobile

  Chamber	Comp Ratio
  64	11.45 to 1
  68	10.97 to 1
  70	10.75 to 1

  (1)

• -12cc Flat Top Oldsmobile

  Chamber	Comp Ratio
  64	11.53 to 1
  68	11.06 to 1
  70	10.84 to 1

  (1)

Show all Piston Top Aprox. Comp. Ratio

Crankshaft Stroke

• 3.975" (8)

Show all Crankshaft Stroke

Piston Pin Diameter

• 0.980" (8)

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Connecting Rod Length

• 7.000" (8)

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Compression Height

• 1.625" (8)

Show all Compression Height

Ring Groove Width

• 1/16-1/16-3/16" (8)

Show all Ring Groove Width