i think in park it should be 75 to 90 psi. it has been almost 10 years since i messed around with this, but i remember backing it off 1 click at a time and noting how much it took to press on the tv cable and watching the needle not move. this was an "ah ha!" moment from when i did my first overdrive (200-4r) swap behind a 305 2bbl and used the TH350 kick down stud. trans was overhauled and only lasted about 2 years of daily driving duties .
4L60/700R4 Slams Into Gear, Delayed 1-2 Shift
- Thread starter Ruff Idol
- Start date
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UPDATE: I reset the TV cable while at WOT. My shifts are right where they should be happening now. Weird - not sure how it would have just all of a sudden gotten tight over time?
It's still a bit clunky but I'm pretty sure this trans has been on its way out for a while and it still nonetheless seems to have some good life left so I'm gonna baby it until I have a better driveway or garage to hopefully do an NV3500 swap in the future. (Did I mention I've never driven stick? Just bored of the current setup.)
It's still a bit clunky but I'm pretty sure this trans has been on its way out for a while and it still nonetheless seems to have some good life left so I'm gonna baby it until I have a better driveway or garage to hopefully do an NV3500 swap in the future. (Did I mention I've never driven stick? Just bored of the current setup.)
DerekTheGreat
Forum Regular
If a given vehicle was offered in stick shift form, that's the one I want. Granted, I've never had problems with the automatics in my life but I prefer to shift my own gears and the look of three pedals.
I used to like a stick shift too. Now I'm too old and lazy
That's good news.
I'm wondering if it has a kit of some sort it in, to firm up the shifts. You said the prior owner replaced the trans. But regardless,...
You might try (even tho I might catch hell for this recommendation) loosening it ONE click. You're not going to hurt anything by doing this and taking it for a short test drive. I'm practically certain that the change won't be radical, but the shifts will soften a bit and may drop in speed a tad.
are all gears "clunky" or just the 1-2 shift? i am going to assume clunky means harsh.
your original description sounds like a problem with the servo/servo pin or possibly the 2/4 band going away. had a 700R4 that would slip really bad on 1-2 shift. on teardown found a previous builder had tried to modify the servo pin and it had actually dug into the band anchor.
your original description sounds like a problem with the servo/servo pin or possibly the 2/4 band going away. had a 700R4 that would slip really bad on 1-2 shift. on teardown found a previous builder had tried to modify the servo pin and it had actually dug into the band anchor.
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DerekTheGreat
Forum Regular
"Every mother's son will rise and fall some day." Good tune, very accurate. My day is coming, that's for sure, but I'll keep rowing until my knees give out.I used to like a stick shift too. Now I'm too old and lazy
Just 2-3 now. 1-2 and 3-4 you would not even notice if you had the A/C or music blasting.
The 2-3 shift on the 700R4 has it's share of complications b/c it requires a "band release / clutch apply" coordinated action to make the shift perfect. It's a known behavior. Whether it's a "problem" in your case is TBD, but don't expect 2-3 to nearly as nice as 1-2 or 3-4. It can be, but certainly may not be.
If you've got either a flare-up or a tie-up happening on 2-3, you might want to investigate / have a trans person look at it. @tayto may have some advice in this regard.
Now that you've developed your understanding of the TV cable and shifts... Is the lockup torque converter functioning correctly? There's often a bit of a bump when it engages, so it's not hard to tell when it's active. Some people mistaken believe it's a 4-5 shift, on account of the bump.
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yes if it isn't "stock" it could be a shift timing issue. excessive servo clearance or 3/4 clutch pack can cause issues. you can play around with orifice sizing in the separator plate by dropping the valve body. but, i bet a corvette servo would fix your issue unless your trans has one already.
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