727 Trans Question

Trying to find out if my stock 1969 727 340 torque converter is the same as a stock 1969 727 318 torque converter both steel cranks.I have been told the stall is different between the two?

"I've been told" they are different as well, here....

Factory Torque-Converters ~ Stall-Rate

Factory Converters

Engine ................ Diameter ............. Stall-Rate
* 225 ...................... 10.75" ................ 1450 to 1650
* 273 ...................... 10.75" ................ 1800
* 318 ...................... 10.75" ................ 1750 to 1950
* 340 ...................... 10.75" ................ 2250 to 2450
* 383 {2-Barrel} ...... 11.75" ................ 1850 to 2150
* 383 {4-Barrel} ...... 10.75" ................ 2350 to 2650
* 440 {4-Barrel} ...... 11.75" ................ 2000 to 2350
* 426 {Street Hemi} . 10.75" ................ 2650 to 2850

According to 'Mopar Guru' Tom Hoover, the Torque-Converter
from the 383 {2-Barrel} in the 1970 C-Body Station Wagons
was the loosest unit.

318 is not the same but the 383 four barrel is. Here is the copy of my 1969 Parts Book.