k first let me say my kick down wire it not hooked up yet still wateing for it to come. so now if i WOT when it changes to seconds gear the car leaps and chips the tires. is that normal or is it because the kick down wire? i just dont wanna brake anything because this kick down wire not being hooked up.
oh its a 350 tranny.
oh its a 350 tranny.
The kickdown cable is, for all intents and purposes, irrelevant to the upshift on 1-2. The chirp is because you likely have a shift kit of some sort installed- but the "leap" is not correct. If you "leap" before the chirp the shift kit is either not functioning correctly or your slipping badly on the initiation of the 1-2 shift (i.e. real tranny problem). If you believe you are "leaping" after the chirp- it may just be your perception- the "leap" is not a "leap" but in fact a stall- tire speed is slowed by sudden gear change (1 to 2) and the corresponding engine RPM drop- i.e. the tires have to catch up to vehicle speed and "grab"- thus the chirp and temporary slowdown/pause. If you have a 700-R4 the 1-2 stall is particularly nasty because of the huge 3.06:1 to 1 gear to 1.62:1 gear. On a TH-350 it isn't nearly as bad because the gear change is 2.52:1 to 1.52:1.
I am going to assume that you have either higher (numeric) gears (i.e. 3.23 or 3.42) and/or a stock-type stall converter to make the TH-350 chirp significantly anyways- lower gears and/or a higher stall tend to "cushion" the wheel slowdown of the 1-2 shift.
I am going to assume that you have either higher (numeric) gears (i.e. 3.23 or 3.42) and/or a stock-type stall converter to make the TH-350 chirp significantly anyways- lower gears and/or a higher stall tend to "cushion" the wheel slowdown of the 1-2 shift.
Supreme Member
The kickdown cable has a lot to do with your 1-2 shift!!! The kickdown cable has to do with the line pressure and at what point the tranny shifts. I don't know much about the 350, but if it requires a kickdown and it's not installed, then you will have problems.
Yes- the kickdown controls line pressure for DOWNSHIFTS- not UPSHIFTS and since their is no downshift from 1st gear it is irrelevant. If you had a kickdown installed but set way too tight- it would affect line pressures negatively in all gears- but disconnected it affects nothing but proper downshifting- Many people have disconnected the kickdown cable on the TH-350 permanently with no ill effects except of course all downshifts have to be done manually. This is not a 200-4R or a 700-R4 or 4L.. series and we are not talking about a TV cable.
k kool atleast i no i am not brakeing anything. so the kick down has nothing to do with your take off at WOT? only when i am just driveing normal and slam on the gas it wont down shift?
Correct. But have you yet determined the exact nature of this "leaping" you mentioned?
nope people keep saying it because my kick down wire, but who knows i am gunna replace it soon so i will find out then. but anyway with the leap feeling it give when going it to second it feels like a really smooth leap not like a jolt or hard (its hard to explain into words) but the leap is what make my tires chirp, and i was told that tranny work was done to it, it was rebuilt not to long ago, so i am thinking it might be normal, because its sort of like a boost (shift kit type thing) and with all the other gear i can barley feel it change (feels perfect) so i am hopeing that its normal. i am gunna be getting the kick down wire installed this week at a tranny shop so i am going to have them check out the tranny for me. but say something was not right, wouldnt the shift be like really hard and just feel wrong?