Pontiac Early & Late

REQUIRED FIELD: Choose Cyl Bore Size First

• 3.750 in , 95.175 mm (2)
• 3.780 in , 95.936 mm (2)
• 3.875 in , 98.348 mm (2)
• 3.905 in , 99.109 mm (2)
• 3.935 in , 99.870 mm (2)

Show all REQUIRED FIELD: Choose Cyl Bore Size First

Piston Top Aprox. Comp. Ratio

• -7cc Flat Top Pontiac Early and Late

  Chamber	Comp Ratio
  62	10.04 to 1
  87	7.82 to 1
  124	5.99 to 1

  (1)

• -7cc Flat Top Pontiac Early and Late

  Chamber	Comp Ratio
  62	10.46 to 1
  87	8.13 to 1
  124	6.22 to 1

  (1)

• -7cc Flat Top Pontiac Early and Late

  Chamber	Comp Ratio
  62	10.57 to 1
  87	8.23 to 1
  124	6.3 to 1

  (1)

• -7cc Flat Top Pontiac Early and Late

  Chamber	Comp Ratio
  62	10.71 to 1
  87	8.34 to 1
  124	6.38 to 1

  (1)

• -7cc Flat Top Pontiac Early and Late

  Chamber	Comp Ratio
  62	9.9 to 1
  87	7.69 to 1
  124	5.9 to 1

  (1)

• -14cc Dish Top Pontiac Early and Late

  Chamber	Comp Ratio
  62	9.14 to 1
  87	7.27 to 1
  124	5.67 to 1

  (1)

• -14cc Dish Top Pontiac Early and Late

  Chamber	Comp Ratio
  62	9.28 to 1
  87	7.37 to 1
  124	5.75 to 1

  (1)

• -14cc Dish Top Pontiac Early and Late

  Chamber	Comp Ratio
  62	9.66 to 1
  87	7.67 to 1
  124	5.98 to 1

  (1)

• -14cc Dish Top Pontiac Early and Late

  Chamber	Comp Ratio
  62	9.76 to 1
  87	7.76 to 1
  124	6.04 to 1

  (1)

• -14cc Dish Top Pontiac Early and Late

  Chamber	Comp Ratio
  62	9.91 to 1
  87	7.86 to 1
  124	6.12 to 1

  (1)

Show all Piston Top Aprox. Comp. Ratio

Crankshaft Stroke

• 3.750" (10)

Show all Crankshaft Stroke

Piston Pin Diameter

• 0.980" (10)

Show all Piston Pin Diameter

Connecting Rod Length

• 6.625" (10)

Show all Connecting Rod Length

Compression Height

• 1.710" (10)

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Ring Groove Width

• 1.2/1.2/3MM (10)

Show all Ring Groove Width