RPM vs. Gear Ratio and Tire Height
This chart shows you the cruise rpm at 60 miles per hour based on gear ratio and tire height.
For maximum performance with less converter slip at the lockup point, your converter's stall speed should stall close to these figures. If the gear ratio and tire size you want to use isn't on the chart, use the following formula to calculate cruise rpm: |
Rear Axle
Gear Ratios
|
Tire
Diameters
|
|
24 |
26 |
28 |
30 |
32 |
34 |
36 |
38 |
40 |
42 |
44 |
|
2.18
|
1831
|
1690
|
1570
|
1465
|
1373
|
1293
|
1221
|
1157
|
1099
|
1046
|
999
|
|
2.50
|
2100
|
1938
|
1800
|
1680
|
1575
|
1482
|
1400
|
1326
|
1290
|
1200
|
1145
|
|
2.74
|
2301
|
2124
|
1973
|
1841
|
1726
|
1625
|
1534
|
1545
|
1381
|
1315
|
1255
|
|
3.08
|
2587
|
2388
|
2218
|
2070
|
1940
|
1826
|
1725
|
1634
|
1552
|
1478
|
1411
|
|
3.23
|
2713
|
2504
|
2326
|
2170
|
2035
|
1915
|
1809
|
1714
|
1628
|
1550
|
1480
|
|
3.50
|
2940
|
2714
|
2520
|
2352
|
2205
|
2075
|
1960
|
1857
|
1764
|
1680
|
1604
|
|
3.73
|
3133
|
2892
|
2686
|
2507
|
2349
|
2212
|
2089
|
1979
|
1880
|
1790
|
1709
|
|
3.90
|
3276
|
3024
|
2808
|
2621
|
2457
|
2312
|
2184
|
2069
|
1966
|
1872
|
1787
|
|
4.10
|
3444
|
3179
|
2952
|
2755
|
2583
|
2431
|
2296
|
2175
|
2066
|
1968
|
1879
|
|
4.56
|
3830
|
3536
|
3283
|
3064
|
2873
|
2704
|
2554
|
2419
|
2298
|
2189
|
2089
|
|
4.88
|
4099
|
3784
|
2513
|
3279
|
3074
|
2894
|
2733
|
2589
|
2460
|
2236
|
2139
|
|
|
