Cylinder head chamber volume

April 26, 2010 EngineHeads

 

Cylinder Head Chamber Volume, cc’s

50

55

60

65

70

75

80

85

90

95

100

105

110

115

303

9.35

9.18

8.67

8.23

7.83

7.47

7.15

6.86

6.60

6.36

6.14

5.93

5.74

5.57

326

10.00

9.78

9.25

8.77

8.34

7.95

7.61

7.30

7.02

6.76

6.52

6.30

6.10

5.91

354*

11.23

10.55

9.97

9.45

8.98

8.57

8.19

7.85

7.54

7.26

7.00

6.77

6.55

6.34

366

11.55

10.86

10.25

9.71

9.23

8.80

8.42

8.07

7.75

7.46

7.19

6.95

6.72

6.51

389

12.20

11.48

10.83

10.26

9.75

9.30

8.89

8.51

8.18

7.87

7.58

7.32

7.08

6.86

400

12.53

11.77

11.11

10.52

10.00

9.52

9.10

8.72

8.37

8.06

7.77

7.50

7.25

7.02

411#

12.86

12.08

11.40

10.79

10.26

9.77

9.34

8.95

8.59

8.27

7.97

7.69

7.44

7.19

421

13.15

12.36

11.65

11.03

10.48

10.00

9.54

9.14

8.77

8.44

8.13

7.85

7.59

7.34

428

13.31

12.50

11.79

11.16

10.60

10.10

9.65

9.25

8.87

8.53

8.22

7.94

7.67

7.42

439%

13.54

12.71

11.99

11.35

10.78

10.27

9.81

9.40

9.02

8.67

8.36

8.06

7.79

7.60

455

14.15

13.28

12.52

11.85

11.26

10.72

10.24

9.81

9.41

9.05

8.71

8.41

8.13

7.86

469~

14.52

13.63

12.85

12.16

11.55

11.00

10.50

10.06

9.65

9.28

8.93

8.62

8.33

8.06

#400 bored .060″ %428 bored .060″ ~455 bored .060″ *Actual displacement of 350.

The above figures assume 10 cc for .042″ (crushed) head gasket, 6 cc valve reliefs for 400 stock pistons, 5 cc for -. 023″ deck height on 4.120″ bore and flat top pistons (no dome). To correct for pop-up pistons, subtract dome volume from chamber volume. To correct for deep valve reliefs, add relief volume to chamber volume. Note that stock claimed compression ratio is usually 0.50 more than actual compression ratio.