question about powerglide.

[runner]

Test drove a 64 chevelle, 283 with powerglide. When you mashed the gas at moderate speed, the transmission didn't downshift into passing gear, am I correct that it should have? IS there supposed to be a mechanical linkage from the transmission to the carb? The transmission in this car had a spring loaded level on the drivers side that was not connected to anything, is that the kickdown lever? thanks, for any help, runner