4L60E Shift Kit - Gear Selection Firmness Question

[HamaTime™]

Quick question, not sure how normal it is, but to all those who have or have had a 4L60E Auto Trans shift kitted, how hard is the gear selection change?

For Example:

When the car is hot/been running, turn it on, pull the shifter from P to D, does it thump/really bang into the gear or is it gentle?

Reason I ask is, the way I tuned my box with the Stage II kit, was to have the pressure set so that the shifts whilst driving are very quick/slightly 'firm' but not thudding, car rocking pressure. But should the initial gear selection really be a hard and I emphasise, the 'HARD' shift

[Trayner]

Mines not too Hard , still uses a bit of force to move it from P to D. And i get the "thud", but all commodores Ive been in have this gearbox selection "thud".
Its more noticeable on lowered cars too , Its got something to do with the gearbox letting the diff move or something along those lines . You will notice when you change gears from P to D your cars arse will drop in the rear

[HamaTime™]

Hmm fair enough. Yeah mine is a decent thud.

I have noticed the back end drop on the change, looks tough haha!

[Trayner]

I have noticed the back end drop on the change, looks tough haha!

Hydraulics!

[nathanVY]

Hahah, hydraulics bro.

Well mine's not shift kitted yet and mine smashes pretty hard thudding into reverse... Not so much (if it all) into drive though.
What'd you get done for your shift kit?

[Trayner]

Hahah, hydraulics bro.

Well mine's not shift kitted yet and mine smashes pretty hard thudding into reverse... Not so much (if it all) into drive though.
What'd you get done for your shift kit?

Mine was
Corvette servo
Stage 2 transgo shift kit
and i think he upped the pressure lol

Cost like $350 all up (including parts and labor)

[GenReaper]

Unless you pull the trans apart and fit Kevlar Bands it will never shift very good.
Realy not worth kitting a 4l60E unless you go right thru it.

[Brett_jjj]

I changed the shift times and bumped up the pressure settings in the ECU memcal chip.It shifts a thousand times better now,firm and quick with no lag any more.It cost me nothing too.I service my auto trans filter and fluid every 20,000 k's.So far its been excellent and even runs a little bit cooler around town than it used to.

[HamaTime™]

Do all your own tuning do you? I'm trying to find the best avenue for my car to get tuned. Since it's on Dual Fuel and all.

[nathanVY]

Mine was
Corvette servo
Stage 2 transgo shift kit
and i think he upped the pressure lol

Cost like $350 all up (including parts and labor)

Not too shabby, Exactly what I was gonna do. What's it drive like? Are the shifts extreme?

Unless you pull the trans apart and fit Kevlar Bands it will never shift very good.
Realy not worth kitting a 4l60E unless you go right thru it.

How much do you think i'd be looking at for wider bands in?

[Brett_jjj]

Do all your own tuning do you? I'm trying to find the best avenue for my car to get tuned. Since it's on Dual Fuel and all.

Yeah,Im still learning though, been doing it for a little while now.,Ive got the hang of the basics of it.Ive got my car running a hell of a lot better than it did before with the standard chip,and its better on fuel too.LPG has a high RON (research octane number)so you can run lots of ignition advance when running on LPG,which should give a bit of a performance gain and save some fuel as well..The timing tables are one of the main things Ive changed on my chip,I only run 98 octane fuel ,so can afford to run more ignition advance than when running on normal 91 octane fuel.The more ignition advance you can wind on(to a point),the more efficiently the engine will run,which equals more power and better fuel economy...

[Trayner]

Not too shabby, Exactly what I was gonna do. What's it drive like? Are the shifts extreme?

Depends man, like normal granny driving hardly know the box has been done
Foot down 1st-2nd gear chirps and such and harder shifts

[TMM]

It is a trait that the 4L60E can slam it into gear and also hard shift from 1st to 2nd even on completely stock boxes. It is usually made worse if your TPS is worn out (i.e. it runs more line pressure then it should at part-throttle) or the ATF is old.

[Jacko84]

could be pressure control soliniod playing up

[nathanVY]

Trayner- sounds like what I want. That would be the transgo kit i'd imagine. I'd like to be able to drive it somewhat normally when cruising, but heavy shifts when hammering

I'm wondering if I should even bother though and just go for a rebuilt and strengthened box - While on this topic does anyone know what would cause my transmission to not shift out of first under full throttle? Doesn't do it every time but it enough to be annoying - and it feels like it's not getting all the power through to the wheels too if that makes sense.

TPS is brand new, the trans has been serviced recently.

[HamaTime™]

Yeah,Im still learning though, been doing it for a little while now.,Ive got the hang of the basics of it.Ive got my car running a hell of a lot better than it did before with the standard chip,and its better on fuel too.LPG has a high RON (research octane number)so you can run lots of ignition advance when running on LPG,which should give a bit of a performance gain and save some fuel as well..The timing tables are one of the main things Ive changed on my chip,I only run 98 octane fuel ,so can afford to run more ignition advance than when running on normal 91 octane fuel.The more ignition advance you can wind on(to a point),the more efficiently the engine will run,which equals more power and better fuel economy...

Yeah I've heard that LPG has a higher octane level, also that LPG needs much finer ignition timing. Arghhh! I really want to get it tuned! The only person who is offering dual fuel memcal tunes is Blackstar7000 on ebay, and I've heard he's not very good

HALP!

[oska]

Yeah,Im still learning though, been doing it for a little while now.,Ive got the hang of the basics of it.Ive got my car running a hell of a lot better than it did before with the standard chip,and its better on fuel too.LPG has a high RON (research octane number)so you can run lots of ignition advance when running on LPG,which should give a bit of a performance gain and save some fuel as well..The timing tables are one of the main things Ive changed on my chip,I only run 98 octane fuel ,so can afford to run more ignition advance than when running on normal 91 octane fuel.The more ignition advance you can wind on(to a point),the more efficiently the engine will run,which equals more power and better fuel economy...

do you want to share the love ?

nothing wrong with my VX but firmer shift would be nice

[nathanVY]

do you want to share the love ?

nothing wrong with my VX but firmer shift would be nice

Nice thread dig

Pretty sure the VX ECU's have to be flash tuned, so unless you are nearby I don't think brett can help you out.
The older ECU's VN-VT could be tuned with a memcal, which can be programmed and mailed

[billy bob]

I got quoted $700 from a transmission shop for a shift kit to be fitted. So I got a DIY one from shiftkits.com.au
For $70 it ups the line pressure for firmer shifts
It really thumps when you put it in drive to, but once going is heaps better

[ScufVZwags]

Iv had the stage 2.5 shift kit with larger boost valve and servo piston put in. also extended my shift point.
Just the other day I blew my auto up. Costing 2750 for a new one. Not happy

[nathanVY]

Iv had the stage 2.5 shift kit with larger boost valve and servo piston put in. also extended my shift point.
Just the other day I blew my auto up. Costing 2750 for a new one. Not happy

Hey there fellow geelong-ian

Does the VZ still run the 4L60E? I've heard that can be quite weak when you give them a thrashing.
Sucks to hear yours blew up.

[ScufVZwags]

Hey there fellow geelong-ian

Does the VZ still run the 4L60E? I've heard that can be quite weak when you give them a thrashing.
Sucks to hear yours blew up.

Hey mate yer im pretty sure its the 4L60E. Not sure if there weak but mine was