CUBIC INCH CHART

PISTON BORE

CRANK SHAFT STROKE

3.250

3.500

3.750

3.812

3.875

3.937

4.000

3.300

27.797

29.936

32.074

32.604

33.143

33.673

34.212

3.307

27.915

30.063

32.210

32.743

33.284

33.816

34.357

3.405

29.594

31.871

34.147

34.712

35.286

35.850

36.424

3.425

29.943

32.246

34.550

35.121

35.701

36.272

36.853

3.530

31.807

34.254

36.700

37.307

37.924

38.531

39.147

3.560

32.350

34.838

37.327

37.944

38.571

39.188

39.812

3.780

36.472

39.277

42.083

42.779

43.486

44.181

44.888

3.812

37.092

39.945

42.798

43.506

44.225

44.933

45.652

3.825

37.345

40.218

43.091

43.803

44.527

45.240

45.964

3.397

39.564

42.608

45.651

46.406

47.173

47.928

48.695

3.965

40.129

43.216

46.303

47.068

47.846

48.612

49.390

4.000

40.841

43.982

47.124

47.903

48.695

49.474

50.266

4.010

41.045

44.203

47.360

48.143

48.939

49.722

50.517

4.030

41.456

44.645

47.834

48.624

49.428

50.219

51.022

4.060

42.075

45.312

48.547

49.351

50.167

50.969

51.785

4.125

43.433

46.774

50.115

50.944

51.786

52.614

53.456

4.250

46.105

49.652

53.199

54.078

54.972

55.851

56.745

FORMULA FOR DETERMINING CUBIC INCHES:

BORE ^ 2 X 0.7854 X STROKE

CHART TO DETERMINE ROD LENGTH

COMPRESSION HEIGHT OF PISTON

CRANK STROKE

Kohler 1.700

Arias 1.125

ARIAS 1.000

Arias 0.875

Domed =1.375 .875 + .500

3.250

5.300=Flush 5.362+ .062 5.550 + .250

5.875 = Flush 5.906 + .031 5.937 + .062 5.968 + .093 6.000 + .125

6.125 =Flush 6.187 + .062 6.250 + .125

6.125= Flush 6.187 + .062 6.250 + .125

5.875 + .250 6.000 + .275 6.125 + .500 6.187 + .562

3.500

5.300 + .125

5.700= Flush 5.812 + .062 5.843 + .093 5.875 + .125 5.906 + .156

5.875 = Flush 5.960 + .031 5.937 + .062 5.968 + .093 6.000 +.125 6.031 + .156

6.000 = Flush 6.031 + .031 6.062 + .062 6.125 + .125

5.750 + .250 5.875 + .375 6.000+ .500 6.062 + .562 6.125 + .625

3.750

5.625 = Flush 5.688 + .062 5.750 + .125

5.750 = Flush 5.812 + .062 5.843 + .093 5.875 + .125 5.906 + .157

5.875 = Flush 5.906 + .031 5.937 + .062 5.968 + .093 6.000 + .125 6.031 + .156

5.625 + .250 5.750 + .375 5.875 + .500 5.937 + .562 6.000 + .625

3.812

5.594 = Flush 5.625 + .031 5.656 + .062 5.719 + .125 5.750 + .156

5.719 = Flush 5.750 + .031 5.781 + .062 5.812 + .093 5.843 + .125

5.843 = Flush 5.875 + .031 5.906 + .062 5.968 + .125

5.594 + .250 5.750 + .406 5.812 + .468 5.875 + .530 5.906 + .562

3.875

5.563= Flush 5.625 + .062 5.688 + .125

5.688 = Flush 5.750 + .062 5.812 + .125 5.843 + .156

5.812 = Flush 5.843 + .031 5.875 + .062 5.906 + .093 5.937 + .125 5.968 + .156

5.563 + .250 5.688 + .375 5.812 + .500 5.875 + .562 5.937 + .625

3.937

5.532 = Flush 5.625 + .093 5.688 + .156

5.675 = Flush 5.719 + .062 5.750 + .093 5.731 + .125 5.812 + .156

5.812 + .031 5.843 + .062 5.875 + .093 5.906 + .125 5.937 + .156

5.812 + .531 5.843 + .562 5.875 + 5.593 5.937 + .656

4.000

5.500 = Flush 5.562 + .062 5.625 + .125

5.625 = Flush 5.688 + .062 5.750 + .125 5.781 + .156

5.750 =Flush 5.812 + .062 5.843 + .093 5.875 + .125 5.906 + .156

5.500 + .250 5.625 + .375 5.750 + .500 5.812 + .562 5.875 + .625

Based on stock deck height of 8.625 K-300 seires engines

CUB CADET GEAR RATIOS

Top Pinion Gear

12

Tire Radius

13.45

84.5

circ

Big Front Gear

84

Engine RPM

6600

26.9

dia

Stock Cub Cadet

3rd

2nd

1st

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Top Shaft Tooth Count

26

19

13

15

16

17

18

20

21

22

23

24

25

27

Bottom Shaft Tooth Count

26

33

39

37

36

35

34

32

31

30

29

28

27

25

Final Gear Ratio

32.2

55.9

96.6

79.4

72.5

66.3

60.8

51.5

47.5

43.9

40.6

37.6

34.8

29.8

mph

16.4

9.4

5.5

6.7

7.3

8.0

8.7

10.3

11.1

12.0

13.0

14.1

15.2

17.7

Top Pinion Gear

10

Tire Radius

13.45

84.5

circ

Big Front Gear

86

Engine RPM

6600

26.9

dia

20% Underdrive

3rd

2nd

1st

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Top Shaft Tooth Count

26

19

13

15

16

17

18

20

21

22

23

24

25

27

Bottom Shaft Tooth Count

26

33

39

37

36

35

34

32

31

30

29

28

27

25

Final Gear Ratio

39.6

68.7

119

97.6

89

81.4

74.7

63.3

58.4

53.9

49.9

46.2

42.7

36.6

mph

13.4

7.7

4.5

5.4

5.9

6.5

7.1

8.3

9.0

9.8

10.6

11.4

12.4

14.4

Top Pinion Gear

11

Tire Radius

13.45

84.5

circ

Big Front Gear

85

Engine RPM

6600

26.9

dia

10% Underdrive

3rd

2nd

1st

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Top Shaft Tooth Count

26

19

13

15

16

17

18

20

21

22

23

24

25

27

Bottom Shaft Tooth Count

26

33

39

37

36

35

34

32

31

30

29

28

27

25

Final Gear Ratio

35.5

61.7

107

87.7

80

73.2

67.1

56.9

52.5

48.5

44.8

41.5

38.4

32.9

mph

14.9

8.6

5.0

6.0

6.6

7.2

7.9

9.3

10.1

10.9

11.8

12.7

13.8

16.1

Top Pinion Gear

13

Tire Radius

13.45

84.5

circ

Big Front Gear

84

Engine RPM

6600

26.9

dia

One Faster Pinion Gear

3rd

2nd

1st

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Top Shaft Tooth Count

26

19

13

15

16

17

18

20

21

22

23

24

25

27

Bottom Shaft Tooth Count

26

33

39

37

36

35

34

32

31

30

29

28

27

25

Final Gear Ratio

29.7

51.6

89.2

73.3

66.9

61.2

56.1

47.6

43.9

40.5

37.5

34.7

32.1

27.5

mph

17.8

10.2

5.9

7.2

7.9

8.6

9.4

11.1

12.0

13.0

14.1

15.2

16.5

19.2

10% Overdrive

Top Pinion Gear

13

Tire Radius

13.45

84.5

circ

Big Front Gear

83

Engine RPM

6600

26.9

dia

3rd

2nd

1st

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Top Shaft Tooth Count

26

19

13

15

16

17

18

20

21

22

23

24

25

27

Bottom Shaft Tooth Count

26

33

39

37

36

35

34

32

31

30

29

28

27

25

Final Gear Ratio

29.4

51

88.1

72.4

66.1

60.5

55.5

47

43.4

40

37

34.3

31.7

27.2

mph

18.0

10.4

6.0

7.3

8.0

8.7

9.5

11.2

12.2

13.2

14.3

15.4

16.7

19.4

16% Overdrive

Top Pinion Gear

14

Tire Radius

13.45

84.5

circ

Big Front Gear

82

Engine RPM

6600

26.9

dia

3rd

2nd

1st

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Top Shaft Tooth Count

26

19

13

15

16

17

18

20

21

22

23

24

25

27

Bottom Shaft Tooth Count

26

33

39

37

36

35

34

32

31

30

29

28

27

25

Final Gear Ratio

26.9

46.8

80.8

66.5

60.6

55.5

50.9

43.1

39.8

36.7

34

31.4

29.1

24.9

mph

19.6

11.3

6.5

7.9

8.7

9.5

10.4

12.3

13.3

14.4

15.6

16.8

18.2

21.2

23% Overdrive

Top Pinion Gear

15

Tire Radius

13.45

84.5

circ

Big Front Gear

81

Engine RPM

6600

26.9

dia

3rd

2nd

1st

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Top Shaft Tooth Count

26

19

13

15

16

17

18

20

21

22

23

24

25

27

Bottom Shaft Tooth Count

26

33

39

37

36

35

34

32

31

30

29

28

27

25

Final Gear Ratio

24.8

43.1

74.5

61.3

55.9

51.1

46.9

39.7

36.7

33.9

31.3

29

26.8

23

mph

21.3

12.2

7.1

8.6

9.5

10.3

11.3

13.3

14.4

15.6

16.9

18.2

19.7

23.0

26% Overdrive

Top Pinion Gear

13

Tire Radius

13.45

84.5

circ

Big Front Gear

67

Engine RPM

6600

26.9

dia

3rd

2nd

1st

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Top Shaft Tooth Count

26

19

13

15

16

17

18

20

21

22

23

24

25

27

Bottom Shaft Tooth Count

26

33

39

37

36

35

34

32

31

30

29

28

27

25

Final Gear Ratio

23.7

41.2

71.1

58.5

53.3

48.8

44.8

37.9

35

32.3

29.9

27.7

25.6

22

mph

22.3

12.8

7.4

9.0

9.9

10.8

11.8

13.9

15.1

16.3

17.7

19.1

20.6

24.1

33% Overdrive

Top Pinion Gear

14

Tire Radius

13.45

84.5

circ

Big Front Gear

66

Engine RPM

6600

26.9

dia

3rd

2nd

1st

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Top Shaft Tooth Count

26

19

13

15

16

17

18

20

21

22

23

24

25

27

Bottom Shaft Tooth Count

26

33

39

37

36

35

34

32

31

30

29

28

27

25

Final Gear Ratio

21.7

37.7

65.1

53.5

48.8

44.6

41

34.7

32

29.6

27.3

25.3

23.4

20.1

m.p.h.

24.4

14.0

8.1

9.9

10.8

11.8

12.9

15.2

16.5

17.9

19.3

20.9

22.6

26.3

38% Overdrive

Top Pinion Gear

15

Tire Radius

13.45

84.5

circ

Big Front Gear

65

Engine RPM

6600

26.9

dia

3rd

2nd

1st

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Top Shaft Tooth Count

26

19

13

15

16

17

18

20

21

22

23

24

25

27

Bottom Shaft Tooth Count

26

33

39

37

36

35

34

32

31

30

29

28

27

25

Final Gear Ratio

19.9

34.6

59.8

49.2

44.9

41

37.7

31.9

29.4

27.2

25.1

23.3

21.5

18.5

m.p.h.

26.5

15.3

8.8

10.7

11.8

12.9

14.0

16.6

18.0

19.4

21.0

22.7

24.5

28.6

43 % Overdrive

Top Pinion Gear

16

Tire Radius

13.45

84.5

circ

Big Front Gear

64

Engine RPM

6600

26.9

dia

3rd

2nd

1st

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Top Shaft Tooth Count

26

19

13

15

16

17

18

20

21

22

23

24

25

27

Bottom Shaft Tooth Count

26

33

39

37

36

35

34

32

31

30

29

28

27

25

Final Gear Ratio

18.4

32

55.2

45.4

41.4

37.9

34.8

29.4

27.2

25.1

23.2

21.5

19.9

17

m.p.h.

28.7

16.5

9.6

11.6

12.8

13.9

15.2

17.9

19.5

21.1

22.8

24.6

26.6

31.0

47% Overdrive

Top Pinion Gear

17

Tire Radius

13.45

84.5

circ

Big Front Gear

63

Engine RPM

6600

26.9

dia

3rd

2nd

1st

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Opt.

Top Shaft Tooth Count

26

19

13

15

16

17

18

20

21

22

23

24

25

27

Bottom Shaft Tooth Count

26

33

39

37

36

35

34

32

31

30

29

28

27

25

Final Gear Ratio

17

29.6

51.1

42

38.4

35.1

32.2

27.3

25.2

23.2

21.5

19.9

18.4

15.8

m.p.h.

31.0

17.8

10.3

12.6

13.8

15.1

16.4

19.4

21.0

22.7

24.6

26.6

28.7

33.5