UPPER SETS

GEAR

TOOTH

WITHOUT REARS

RATIO

COUNT

YOUR O.A. RATIO IS

1 TO 1

32/32

1.640

1.640

1.032

31/32

1.692

1.589

1.065

31/33

1.747

1.540

1.100

30/33

1.804

1.491

1.133

30/34

1.858

1.447

1.172

29/34

1.922

1.399

1.207

29/35

1.979

1.359

1.250

28/35

2.050

1.312

1.286

28/36

2.109

1.275

1.333

27/36

2.186

1.370

27/37

2.247

1.420

26/37

2.329

1.462

26/38

2.398

1.520

25/38

2.493

1.560

25/39

2.558

1.625

24/39

2.665

1.667

24/40

2.734

UNDERDRIVE

OVERDRIVE

LOWER SETS

RATIO

TOOTH COUNT

RATIO

TOOTH COUNT

1 TO 1

33/33

2.421

19/46

1.640

25/41

2.824

17/48

Upper Set x Lower Set x Rear Ends ( x Any Transmission Ratio) = Overall Ratio