3t40 shift points

[sharkey]

yea its basicly an idiot thing.

[asylummotorsports]

Even if you leave the 3t40 (TH125) in first it will still shift into 2nd at 5200 RPM with the 3.1 at WOT.
That is what I'm trying to get around when I install the new FDR and the 3400.
Any more ideas?
Thanx

[sharkey]

i have never heard of that. every 125 i have driven wont shift when you have it in manual low and are on the limmiter.

are you sure your transmission is actualy going into 1st gear on the transmission??? if your linkage is out, it may only be going into manual 2nd, wich will still shift 1-2.

[torq455]

mine has never shifted automatically when i put it in manual 1st. i've hit my rev limiter a couple of times. besides, the computer dosen't control the TH125 shifts, just the TCC lock up.

[1988GTU]

I feel blow shifting is one of the few great ideas for nowadays car.

I remember trying to get a CTS to redline... it just blow shifted. Tried it on a Dodge RAM, I think 00', it kinda rev'ed high that day. The trans started to slip a week after, and the engine burnt oil soon after. Good thing it was a leased truck.

[asylummotorsports]

Hmm.
I may be wrong. (My God, THAT has never happened before.)
I'll have my humble pie a la mode please.
But I misspoke my desire.
What I am trying to do is get the trans to shift, by itself, higher than 5200 RPM.
This is basically a bracket car, and I would rather not have to start shifting the damn thing.
Sorry for the mistake.

[z284pwr]

Yeah, I can vouch that the 4T60 is the same way....Even though I think I screwed mine up....

Mine likes to NOT shift out of first gear when moving the level to 2nd gear. Trying to shift at 6000 and having it not shift until letting off at 7,000 even after the lever has been in 2nd gear since then is kinda scarey I don't think they are meant for that kind of RPM

[torq455]

Hmm.
I may be wrong. (My God, THAT has never happened before.)
I'll have my humble pie a la mode please.
But I misspoke my desire.
What I am trying to do is get the trans to shift, by itself, higher than 5200 RPM.
This is basically a bracket car, and I would rather not have to start shifting the damn thing.
Sorry for the mistake.

You can have your tranny guy put different (stiffer/weaker) springs to make the tranny shift at a different time. My guy says it's trial and error but it can be done.

[sharkey]

Yeah, I can vouch that the 4T60 is the same way....Even though I think I screwed mine up....

Mine likes to NOT shift out of first gear when moving the level to 2nd gear. Trying to shift at 6000 and having it not shift until letting off at 7,000 even after the lever has been in 2nd gear since then is kinda scarey I don't think they are meant for that kind of RPM

you have to much throttle pressure, you need to loosen the cable a bit. if you put your car in drive, see were it shifts at WOT 1-2. stock will usualy shift around 5500, but you can tighten it up to shift about 6000. if its shifting higher, loosen the cable off.

[SHOoff]

I feel blow shifting is one of the few great ideas for nowadays car.

That's due to the many idots that we have driving cars. It saves them lots of money on warranty work when they can make the car prevent itself from killing itself.

Yeah, I can vouch that the 4T60 is the same way....Even though I think I screwed mine up....

Mine likes to NOT shift out of first gear when moving the level to 2nd gear. Trying to shift at 6000 and having it not shift until letting off at 7,000 even after the lever has been in 2nd gear since then is kinda scarey I don't think they are meant for that kind of RPM

Thats odd. I had a 440t4 (same) that didnt do that. It was old and had a lot of miles too. I did come to the understanding that those do NOT like WOT, full RPM shifts. Things were even set up so that it would A) not shift at WOT and high RPM, or B) retard the shit out of the timing during the shift. Not sure how B was accomplished with a non-electronic tranny though.

[sharkey]

the 440t4 shift timing is controlled by the vaccume modulator. kickdown is controlled by the throttle cable

[3400-95-Modified]

Assylum is gay... hahah

Hey has anyone thought of doing a 3t40 in a 95 replacing the 4t60e???

just curious... since it's not electronic controlled, you can get quick shifts with shift kits... and you can set the current shift selector in the 95 car like you would if you were putting in a 5-speed, bypass the P/N safety switch in the stock location, move it to the other one, and just set the gear selector from the 4t60e to D an leave it there on the harness and use your existing shift selector to control the new trans...


Just a thought.