My 72 Skylark has the original th350. since ive had it, i have never had the kickdown detent cable installed, it just seems to be a little to short to get it to the gas pedal . The trans does fine in first and second, but it is slow and kinda random shifting to 3rd. It also has delays going into reverse. I was doing some trans research on switching to a 455/th 400 and ran across this info. "The pre-'81 TH350 uses a detent cable to activate the gearshifts and passing-gear kickdown. You must use a detent with these units, or the transmission will not have a passing gear, plus the shifts will be very sluggish." I already know i dont have a passing gear, but can someone explain How the detent cable being off could affect the other shifts being sluggish. Could that be part of my buggy 3rd gear?