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D.S.S. SUPER MODular COMPRESSION RATIO CHART

Common cylinder head combustion chamber volumes:

2 valve PI 44 cc ( OEM 1999 and newer)
2 valve NPI 51 cc (OEM 1992 to 1998 )
2 valve PI D.S.S. match port 44 cc (1999 and newer)
2 valve PI D.S.S. Full CNC Port 50cc (1999 and newer)
3 valve Ford Racing CNC ported 50 cc
4 valve Ford Racing CNC ported 52 cc

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Combustion chamber Volume (in CC's) 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
4.6 Dish -3cc (2V) 12.49 12.26 12.05 11.84 11.64 11.44 11.26 11.08 10.90 10.74 10.58 10.42 10.27 10.12 9.98 9.84 9.71
Dish-4cc (4V) 12.26 12.05 11.84 11.64 11.44 11.26 11.08 10.90 10.74 10.58 10.42 10.27 10.12 9.98 9.84 9.71 9.58
Dish -5cc (3V) 12.05 11.84 11.64 11.44 11.26 11.08 10.90 10.74 10.58 10.42 10.27 10.12 9.98 9.84 9.71 9.58 9.45
Dish -10cc 11.08 10.90 10.74 10.58 10.42 10.27 10.12 9.98 9.84 9.71 9.58 9.45 9.33 9.21 9.09 8.98 8.87
Dish -12cc (4V) 10.74 10.58 10.42 10.27 10.12 9.98 9.84 9.71 9.58 9.45 9.33 9.21 9.09 8.98 8.87 8.77 8.66
Dish -13cc (3V) 10.58 10.42 10.27 10.12 9.98 9.84 9.71 9.58 9.45 9.33 9.21 9.09 8.98 8.87 8.77 8.66 8.56
Dish -18cc 9.84 9.71 9.58 9.45 9.33 9.21 9.09 8.98 8.87 8.77 8.66 8.56 8.46 8.37 8.27 8.18 8.10
Dish -21cc (4V) 9.45 9.33 9.21 9.09 8.98 8.87 8.77 8.66 8.56 8.46 8.37 8.27 8.18 8.10 8.01 7.92 7.84
Dish -22cc (3V) 9.33 9.21 9.09 8.98 8.87 8.77 8.66 8.56 8.46 8.37 8.27 8.18 8.10 8.01 7.92 7.84 7.76
5.0 Dish -6cc (2V) 12.47 12.26 12.05 11.86 11.67 11.48 11.31 11.13 10.97 10.81 10.65 10.50 10.36 10.21 10.08 9.94 9.81
Dish-7cc (4V) 12.26 12.05 11.86 11.67 11.48 11.31 11.13 10.97 10.81 10.65 10.50 10.36 10.21 10.08 9.94 9.81 9.69
Dish -8cc (3V) 12.05 11.86 11.67 11.48 11.31 11.13 10.97 10.81 10.65 10.50 10.36 10.21 10.08 9.94 9.81 9.69 9.57
Dish -13cc 11.13 10.97 10.81 10.65 10.50 10.36 10.21 10.08 9.94 9.81 9.69 9.57 9.45 9.33 9.22 9.11 9.00
Dish -15cc (4V) 10.81 10.65 10.50 10.36 10.21 10.08 9.94 9.81 9.69 9.57 9.45 9.33 9.22 9.11 9.00 8.90 8.80
Dish -16cc (3V) 10.65 10.50 10.36 10.21 10.08 9.94 9.81 9.69 9.57 9.45 9.33 9.22 9.11 9.00 8.90 8.80 8.70
Dish -21cc 9.94 9.81 9.69 9.57 9.45 9.33 9.22 9.11 9.00 8.90 8.80 8.70 8.60 8.51 8.42 8.33 8.24
Dish -24cc (4V) 9.57 9.45 9.33 9.22 9.11 9.00 8.90 8.80 8.70 8.60 8.51 8.42 8.33 8.24 8.16 8.07 7.99
Dish -25cc (3V) 9.45 9.33 9.22 9.11 9.00 8.90 8.80 8.70 8.60 8.51 8.42 8.33 8.24 8.16 8.07 7.99 7.91
5.3 Dish -6cc (2V) 13.40 13.17 12.95 12.74 12.53 12.34 12.15 11.96 11.78 11.61 11.44 11.28 11.12 10.97 10.82 10.68 10.54
Dish-7cc (4V) 13.17 12.95 12.74 12.53 12.34 12.15 11.96 11.78 11.61 11.44 11.28 11.12 10.97 10.82 10.68 10.54 10.40
Dish -8cc (3V) 12.95 12.74 12.53 12.34 12.15 11.96 11.78 11.61 11.44 11.28 11.12 10.97 10.82 10.68 10.54 10.40 10.27
Dish -13cc 11.96 11.78 11.61 11.44 11.28 11.12 10.97 10.82 10.68 10.54 10.40 10.27 10.14 10.02 9.90 9.78 9.66
Dish -15cc (4V) 11.61 11.44 11.28 11.12 10.97 10.82 10.68 10.54 10.40 10.27 10.14 10.02 9.90 9.78 9.66 9.55 9.44
Dish -16cc (3V) 11.44 11.28 11.12 10.97 10.82 10.68 10.54 10.40 10.27 10.14 10.02 9.90 9.78 9.66 9.55 9.44 9.33
Dish -21cc 10.68 10.54 10.40 10.27 10.14 10.02 9.90 9.78 9.66 9.55 9.44 9.33 9.23 9.13 9.03 8.93 8.84
Dish -24cc (4V) 10.27 10.14 10.02 9.90 9.78 9.66 9.55 9.44 9.33 9.23 9.13 9.03 8.93 8.84 8.75 8.66 8.57
Dish -25cc (3V) 10.14 10.02 9.90 9.78 9.66 9.55 9.44 9.33 9.23 9.13 9.03 8.93 8.84 8.75 8.66 8.57 8.48
5.4 Dish -3cc (2V) 10.74 10.61 10.47 10.34 10.21 10.09 9.97 9.85 9.74 9.63 9.52 9.41 9.31 9.21 9.11 9.01 8.92
Dish-4cc (4V) 10.61 10.47 10.34 10.21 10.09 9.97 9.85 9.74 9.63 9.52 9.41 9.31 9.21 9.11 9.01 8.92 8.83
Dish -5cc (3V) 10.47 10.34 10.21 10.09 9.97 9.85 9.74 9.63 9.52 9.41 9.31 9.21 9.11 9.01 8.92 8.83 8.74
Dish -10cc 9.85 9.74 9.63 9.52 9.41 9.31 9.21 9.11 9.01 8.92 8.83 8.74 8.65 8.56 8.48 8.40 8.32
Dish -12cc (4V) 9.63 9.52 9.41 9.31 9.21 9.11 9.01 8.92 8.83 8.74 8.65 8.56 8.48 8.40 8.32 8.24 8.16
Dish -13cc (4V) 9.52 9.41 9.31 9.21 9.11 9.01 8.92 8.83 8.74 8.65 8.56 8.48 8.40 8.32 8.24 8.16 8.09
Dish -18cc 9.01 8.92 8.83 8.74 8.65 8.56 8.48 8.40 8.32 8.24 8.16 8.09 8.02 7.94 7.87 7.80 7.74
Dish -21cc (4V) 8.74 8.65 8.56 8.48 8.40 8.32 8.24 8.16 8.09 8.02 7.94 7.87 7.80 7.74 7.67 7.60 7.54
Dish -22cc (3V) 8.65 8.56 8.48 8.40 8.32 8.24 8.16 8.09 8.02 7.94 7.87 7.80 7.74 7.67 7.60 7.54 7.48
Modular engine compression figured with 3.552 cylinder bore, 3.63" gasket bore,
.030" gasket thickness, zero deck on 4.6 and 5.0, .119 below deck on a 5.4