What will a a torque converter change do for the Impala?
Changing to a higher stall torque converter allows the engine to rev to its powerband faster, and to stay there while accelerating. Since all street converters for the Impala still lock up, there is no difference in cruise RPM’s. GM offers torque converters of several different stall speeds for the 4L60E, 4L60, and 700-R4 transmissions. The stock Impala converter is rated to stall at 1397 RPM (actual stall will be anywhere from 1400 to 1600, depending on engine torque output), while the highest stall converter GM offers is rated to stall at 2025 rpm (actual stall will be around 2000 to 2200 rpm, depending on engine torque output). The higher stall speed means greater torque multiplication which improves acceleration off the line. This also virtually eliminates the annoying creep while idling in drive as well as the clunk you sometimes get when shifting from park into either drive or reverse. You can tell which converter you have by a 4-digit alpha code found on a sticker attached to th
