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:

MPH x Axle Ratio x 336
Tire Diameter

Rear Axle Gear Ratio	Tire Diameter
	24"	26"	28"	30"	32"	34"	36"	38"	40"	42"	44"

2.18 2.50 2.74 3.08 3.23 3.50 3.73 3.90 4.10 4.56 4.88	1831 2100 2301 2587 2713 2940 3133 3276 3444 3830 4099	1690 1938 2124 2388 2504 2714 2892 3024 3179 3536 3784	1570 1800 1973 2218 2326 2520 2686 2808 2952 3283 3513	1465 1680 1841 2070 2170 2352 2507 2621 2755 3064 3279	1373 1575 1726 1940 2035 2205 2349 2457 2583 2873 3074	1293 1482 1625 1826 1915 2075 2212 2312 2431 2704 2894	1221 1400 1534 1725 1809 1960 2089 2184 2296 2554 2733	1157 1326 1545 1634 1714 1857 1979 2069 2175 2419 2589	1099 1290 1381 1552 1628 1764 1880 1966 2066 2298 2460	1046 \|1200 1315 1478 1550 1680 1790 1872 1968 2189 2236	999 1145 1255 1411 1480 1604 1709 1787 1879 2089 2139