6 Spline
Quick Change Gears
P/N 4400, Series (1” Wide)
P/N 4500, Series (1 3/8” Wide)
SAE 8620 Steel, Crown Cut, 6 Spline Quick Change Gears. When ordering 1”
Wide Gears add Prefix 44 To Set Number. When ordering 1 3/8” Wide Gears
add Prefix 45 To Set Number. Example 4401 or 4501
Remember to refill gear cavity
with good quality gear lube after
quick change gear changes.
Gear
Set #
Low Spur
Ratio
1
1.000
2
0.958
3
0.920
3B
0.895
3A
0.880
4
0.846
5
0.808
5A
0.792
6
0.778
24
0.767
25
0.750
7
0.741
23
0.727
8
0.714
22
0.704
9
0.696
10
0.682
11
0.667
12
0.655
13
0.652
14
0.636
15
0.625
16
0.615
17
0.600
18
0.591
18A
0.571
19
0.560
20
0.556
27
0.542
21
0.531
28
0.528
29
0.522
26
0.517
30
0.500
31
0.488
32
0.475
(Numerical Ratio Listed)
1580 Trolley Road
York, PA 17408 USA
Ph.: 717.764.9844
Fax: 717.764.0617
www.wintersperformance.com
3.78 R&P Ratio
(9-34 Teeth)
4.11 R&P Ratio
(9-37 Teeth)
4.33 R&P Ratio
(9-39 Teeth)
High Spur
Ratio
No. of
Teeth
Low
High
Low
High
Low
High
1.000
1.043
1.087
1.118
1.136
1.182
1.238
1.263
1.286
1.304
1.333
1.350
1.375
1.400
1.421
1.438
1.467
1.500
1.526
1.533
1.571
1.600
1.625
1.667
1.692
1.750
1.786
1.800
1.846
1.882
1.895
1.917
1.933
2.000
2.050
2.105
24/24
23/24
23/25
17/19
22/25
22/26
21/26
19/24
21/27
23/30
18/24
20/27
16/22
20/28
19/27
16/23
15/22
18/27
19/29
15/23
14/22
15/24
16/26
18/30
13/22
16/28
14/25
15/27
13/24
17/32
19/36
12/23
15/29
20/40
20/41
19/40
3.78
3.62
3.48
3.38
3.33
3.20
3.05
2.99
2.94
2.90
2.84
2.80
2.75
2.70
2.66
2.63
2.58
2.52
2.48
2.47
2.41
2.36
2.33
2.27
2.23
2.16
2.12
2.10
2.05
2.01
2.00
1.97
1.96
1.89
1.84
1.80
3.78
3.94
4.11
4.22
4.30
4.47
4.68
4.77
4.86
4.93
5.04
5.10
5.20
5.29
5.37
5.43
5.54
5.67
5.77
5.80
5.94
6.05
6.14
6.30
6.40
6.62
6.75
6.80
6.98
7.12
7.16
7.25
7.31
7.56
7.75
7.95
4.11
3.94
3.78
3.68
3.62
3.48
3.32
3.25
3.20
3.15
3.08
3.04
2.99
2.94
2.89
2.86
2.80
2.74
2.69
2.68
2.62
2.57
2.53
2.47
2.43
2.35
2.30
2.28
2.23
2.18
2.17
2.14
2.13
2.06
2.00
1.95
4.11
4.29
4.47
4.59
4.67
4.86
5.09
5.19
5.28
5.36
5.48
5.55
5.65
5.75
5.84
5.91
6.03
6.17
6.27
6.30
6.46
6.58
6.68
6.85
6.96
7.19
7.34
7.40
7.59
7.74
7.79
7.88
7.95
8.22
8.43
8.65
4.33
4.15
3.98
3.87
3.81
3.66
3.50
3.43
3.37
3.32
3.25
3.21
3.15
3.09
3.05
3.01
2.95
2.89
2.84
2.82
2.76
2.71
2.66
2.60
2.56
2.47
2.42
2.41
2.35
2.30
2.29
2.26
2.24
2.17
2.11
2.06
4.33
4.52
4.71
4.84
4.92
5.12
5.36
5.47
5.57
5.65
5.77
5.85
5.95
6.06
6.15
6.22
6.35
6.50
6.61
6.64
6.80
6.93
7.04
7.22
7.33
7.58
7.73
7.79
7.99
8.15
8.20
8.30
8.37
8.66
8.88
9.12
©2008 Winters Performance Products, Inc. See current catalog or web site for warranty disclaimer.
6 Spline
Quick Change Gears
To Determine Gear RPM Change:
(RPM) ÷(Gear Ratio) x (New Ratio) = (New RPM)
Example 8000 ÷
6.58
x 6.33
=
7696
To Determine Final Drive:
(# Teeth Top Gear) ÷ (# Teeth Bottom Gear) x R&P Ratio = Final Drive
1580 Trolley Road
York, PA 17408 USA
Ph.: 717.764.9844
Fax: 717.764.0617
www.wintersperformance.com
Gearing Formulas
Ratio x MPH
x 336 = RPM
Tire DIA
or
Ratio =
Gear
Set #
Low Spur
Ratio
1
1.000
2
0.958
3
0.920
3B
0.895
3A
0.880
4
0.846
5
0.808
5A
0.792
6
0.778
24
0.767
25
0.750
7
0.741
23
0.727
8
0.714
22
0.704
9
0.696
10
0.682
11
0.667
12
0.655
13
0.652
14
0.636
15
0.625
16
0.615
17
0.600
18
0.591
18A
0.571
19
0.560
20
0.556
27
0.542
21
0.531
28
0.528
29
0.522
26
0.517
30
0.500
31
0.488
32
0.475
(Numerical Ratio Listed)
RPM x Tire DIA
MPH x 336
4.88 R&P Ratio
(8-39 Teeth)
5.13 R&P Ratio
(8-41 Teeth)
5.38 R&P Ratio
(8-43 Teeth)
High Spur
Ratio
No. of
Teeth
Low
High
Low
High
Low
High
1.000
1.043
1.087
1.118
1.136
1.182
1.238
1.263
1.286
1.304
1.333
1.350
1.375
1.400
1.421
1.438
1.467
1.500
1.526
1.533
1.571
1.600
1.625
1.667
1.692
1.750
1.786
1.800
1.846
1.882
1.895
1.917
1.933
2.000
2.050
2.105
24/24
23/24
23/25
17/19
22/25
22/26
21/26
19/24
21/27
23/30
18/24
20/27
16/22
20/28
19/27
16/23
15/22
18/27
19/29
15/23
14/22
15/24
16/26
18/30
13/22
16/28
14/25
15/27
13/24
17/32
19/36
12/23
15/29
20/40
20/41
19/40
4.88
4.68
4.49
4.37
4.29
4.13
3.94
3.86
3.80
3.74
3.66
3.61
3.55
3.49
3.43
3.39
3.33
3.25
3.20
3.18
3.11
3.05
3.00
2.93
2.88
2.79
2.73
2.71
2.64
2.59
2.58
2.55
2.52
2.44
2.38
2.32
4.88
5.09
5.30
5.45
5.55
5.77
6.04
6.16
6.27
6.37
6.51
6.59
6.71
6.83
6.93
7.02
7.16
7.32
7.45
7.48
7.67
7.81
7.93
8.13
8.26
8.54
8.71
8.78
9.01
9.19
9.25
9.35
9.43
9.76
10.00
10.27
5.13
4.92
4.72
4.59
4.51
4.34
4.14
4.06
3.99
3.93
3.85
3.80
3.73
3.66
3.61
3.57
3.50
3.42
3.36
3.35
3.26
3.21
3.16
3.08
3.03
2.93
2.87
2.85
2.78
2.73
2.71
2.68
2.65
2.57
2.50
2.44
5.13
5.35
5.58
5.73
5.83
6.06
6.35
6.48
6.60
6.69
6.84
6.93
7.05
7.18
7.29
7.37
7.52
7.70
7.83
7.87
8.06
8.21
8.34
8.55
8.68
8.98
9.16
9.23
9.47
9.66
9.72
9.83
9.92
10.26
10.52
10.80
5.38
5.16
4.95
4.81
4.73
4.55
4.35
4.26
4.18
4.12
4.04
3.99
3.91
3.84
3.79
3.74
3.67
3.59
3.52
3.51
3.42
3.36
3.31
3.23
3.18
3.07
3.01
2.99
2.91
2.86
2.84
2.81
2.78
2.69
2.62
2.56
5.38
5.61
5.85
6.01
6.11
6.36
6.66
6.80
6.92
7.02
7.17
7.26
7.40
7.53
7.65
7.73
7.89
8.07
8.21
8.25
8.45
8.61
8.74
8.97
9.10
9.42
9.61
9.68
9.93
10.13
10.19
10.31
10.40
10.76
11.03
11.33
©2008 Winters Performance Products, Inc. See current catalog or web site for warranty disclaimer.