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The Warren County Antique Tractor Association
RPM Rules

Tractor PTO RPM Engine RPM
Allis Chalmer Std. Plus 20% Std. Plus 20%
B & C & C.A. & R.C. 0 2220
W.C. & W.F. 775 1890
W.D. 806 2064
W.D. 45 798 2039
Case PTO Plus 20% Engine Plus 20%
D & D.C. 746 1668
L & L.A. 720 1440
S.C. 737 2112
V.A.C. 718 1920
Ford PTO Plus 20% Engine Plus 20%
8N 1016 2796
9N 959 2640
I.H./Farmall PTO Plus 20% Engine Plus 20%
W-30 676 1560
F-12 646 1860
F-20 606 1548
F-30 641 1518
A 0 1848
B 0 1848
B.N. 0 1848
C 0 2250
Super C 0 2250
H 738 2178
Super H 732 2237
M 727 1914
Super M 708 1920
W-6 708 1914
W-9 708 1980
200 712 2178
300 714 2310
400 707 1920
John Deere PTO Plus 20% Engine Plus 20%
M 660 1980
M.T. 660 1980
A 725 1296
B 710 1644
D 685 1176
G 726 1338
40 737 2430
50 713 1650
60 748 1338
70 748 1338
Massey Harris PTO Plus 20% Engine Plus 20%
33 734 2040
44 720 1800
44-6 0 2400
44-SP 720 1800
333 728 2040
444 728 2040
101 SR 0 2376
101 JR 0 2460
Minneapolis Moline PTO Plus 20% Engine Plus 20%
G 782 1716
U 757 1680
UB 782 1716
Z 812 1980
R 792 1980
Oliver PTO Plus 20% Engine Plus 20%
70 694 1932
66 698 2100
Super 66 878 2400
77 698 2100
Super 77 700 2100
88 698 2100
Super 88 700 2100
Cockshutt PTO Plus 20% Engine Plus 20%
30 718 2172
40 713 2220
50 713 2220

Thanks to Gary Grove for the RPM Chart