Another 4th Gear Kickdown Question
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Another 4th Gear Kickdown Question
Originally posted by Pro Built Automatics:
You can do the modifications yourself by taking out the TV plunger & sleeve. You will want to block the part throttle 4-3 downshift
passages using a small allen set screw in each hole (2). Grind the outside of plug flush, blow off with air make sure plunger moves freely in sleeve, and sleeve goes into the valve body freely. Cost of two allen screws? about .36 cents.
Hope This Helps!!!
[Justin1989]:Sooo.. This thread had some people talking about aftermarket B&M sleeves and GM sleeves..
I was wondering if it's possible to modify your stock sleeve to allow WOT 4th gear. Do I have to buy a new sleeve, or does the original have P.T. holes I can plug?
Remember, I want WOT or really close to WOT 4th gear capabilities in my 1989 GTA.
You can do the modifications yourself by taking out the TV plunger & sleeve. You will want to block the part throttle 4-3 downshift
passages using a small allen set screw in each hole (2). Grind the outside of plug flush, blow off with air make sure plunger moves freely in sleeve, and sleeve goes into the valve body freely. Cost of two allen screws? about .36 cents.
Hope This Helps!!!
[Justin1989]:Sooo.. This thread had some people talking about aftermarket B&M sleeves and GM sleeves..
I was wondering if it's possible to modify your stock sleeve to allow WOT 4th gear. Do I have to buy a new sleeve, or does the original have P.T. holes I can plug?
Remember, I want WOT or really close to WOT 4th gear capabilities in my 1989 GTA.
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Re: Another 4th Gear Kickdown Question
hey long time no see where have you been???????
anyway, i told the guy who rebult my trans that i wanted it to lay rubber shifting, be almost bullet proof and to have WOT in OD
he did it,
lol now what he did to allow the OD at WOT i dont know IIRC its in the valve body.....i will try and find out how you can do this yourself, but i dont think it has anything to do the the TV cable
anyway, i told the guy who rebult my trans that i wanted it to lay rubber shifting, be almost bullet proof and to have WOT in OD
he did it,
![lmao](https://www.thirdgen.org/forums/images/smilies/lmao.gif)
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Re: Another 4th Gear Kickdown Question
Originally posted by Pro Built Automatics:
You can do the modifications yourself by taking out the TV plunger & sleeve. You will want to block the part throttle 4-3 downshift
passages using a small allen set screw in each hole (2). Grind the outside of plug flush, blow off with air make sure plunger moves freely in sleeve, and sleeve goes into the valve body freely. Cost of two allen screws? about .36 cents.
Hope This Helps!!!
[Justin1989]:Sooo.. This thread had some people talking about aftermarket B&M sleeves and GM sleeves..
I was wondering if it's possible to modify your stock sleeve to allow WOT 4th gear. Do I have to buy a new sleeve, or does the original have P.T. holes I can plug?
Remember, I want WOT or really close to WOT 4th gear capabilities in my 1989 GTA.
You can do the modifications yourself by taking out the TV plunger & sleeve. You will want to block the part throttle 4-3 downshift
passages using a small allen set screw in each hole (2). Grind the outside of plug flush, blow off with air make sure plunger moves freely in sleeve, and sleeve goes into the valve body freely. Cost of two allen screws? about .36 cents.
Hope This Helps!!!
[Justin1989]:Sooo.. This thread had some people talking about aftermarket B&M sleeves and GM sleeves..
I was wondering if it's possible to modify your stock sleeve to allow WOT 4th gear. Do I have to buy a new sleeve, or does the original have P.T. holes I can plug?
Remember, I want WOT or really close to WOT 4th gear capabilities in my 1989 GTA.
RBob.
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Re: Another 4th Gear Kickdown Question
hey long time no see where have you been???????
anyway, i told the guy who rebult my trans that i wanted it to lay rubber shifting, be almost bullet proof and to have WOT in OD
he did it,
lol now what he did to allow the OD at WOT i dont know IIRC its in the valve body.....i will try and find out how you can do this yourself, but i dont think it has anything to do the the TV cable
anyway, i told the guy who rebult my trans that i wanted it to lay rubber shifting, be almost bullet proof and to have WOT in OD
he did it,
![lmao](https://www.thirdgen.org/forums/images/smilies/lmao.gif)
My car is starting to really fall apart. The headlight motor bearings are shot (on new motors), my dash lights are all out as of yesterday.. I think this might be at the fault of the remote dimmer upon a little bit of research but the weird thing is that my fog lights don't work (new, but worked fine for a few weeks) AND my dash lights don't work. The radio works and displays the clock but will not dim with the dimmer. Also I can still turn on the floor lights, dome light, and rearview mirror lights. I need to fix this VERY QUICKLY as I have to drive this car at night EVERY DAY.
=/
Definately find out what he did. I'm handy as hell with tools so I don't have any problem getting down n' dirty.
EDIT: All the fuses are fine. I even replaced the correct fuses just to be sure.
Last edited by Justin1989; 02-18-2009 at 12:25 AM. Reason: More info.
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Re: Another 4th Gear Kickdown Question
http://www.joby.se/corvette/mods/2002-0X02_tranny_wot/
That's the article. Man this is just what I was looking for. Thanks a bunch, and honestly someone needs to either copy this and put it in the tech articles or post a link to it in the tech articles. I'm sure most people don't know this is possible and would do it if they saw how easy it is!
That's the article. Man this is just what I was looking for. Thanks a bunch, and honestly someone needs to either copy this and put it in the tech articles or post a link to it in the tech articles. I'm sure most people don't know this is possible and would do it if they saw how easy it is!
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Re: Another 4th Gear Kickdown Question
nice. I checked out the pic also and cool stuff.
wot in cali? good luck with that. packed freeways, and cops everywhere. my fav was a wot late nighter with an old friend years ago on the 80 in the same as yours. I thought for sure we were gonna get caught but didn't. went from sac all the way to roseville wot. stupid dumb. I was impressed by the 700r4 in his car because of that feature added. My th350 velle wouldn't have done what the gta did. I know it would've outrun mine and mine was much faster car, I was the passenger that night-again stupid dumb.
wot in cali? good luck with that. packed freeways, and cops everywhere. my fav was a wot late nighter with an old friend years ago on the 80 in the same as yours. I thought for sure we were gonna get caught but didn't. went from sac all the way to roseville wot. stupid dumb. I was impressed by the 700r4 in his car because of that feature added. My th350 velle wouldn't have done what the gta did. I know it would've outrun mine and mine was much faster car, I was the passenger that night-again stupid dumb.
Last edited by ed o; 02-18-2009 at 02:08 AM.
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Re: Another 4th Gear Kickdown Question
Haha Cali isn't as bad as you think. In my area there's a brand new bypass that cops never sit on. Everyone rolls through going 80. Except for me. I've hit 130 so far and that's with 1/2 throttle and cornering.
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Re: Another 4th Gear Kickdown Question
Alright will do. BTW from earlier research I heard they're .160 or .162 self-tap Allens.
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Re: Another 4th Gear Kickdown Question
if your dash lights aint working than more than likely your tail/sidemarkers aint working also........check your fuses, hopefully its just a fuse, if its the switch than its easy to change to.....but i willing to almost put money on a fuse issue
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Re: Another 4th Gear Kickdown Question
Well I got up at 6 and worked on it this morning in the rain laying in the street. Haha. It was the remote dimmer switch. I just had to clean it with WD-40 and it worked again. Only TA's have this.. Tonight I am going to rip apart the tranny with a friend of mine and do the WOT mod. I got some college classes in a quick minute though. Anyone know if the WOT mod requires one to drain the tranny fluid? Or do you just open the sucker up?
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Re: Another 4th Gear Kickdown Question
So I still haven't done it but probably tonight now that I know I need 5 quarts of tranny fluid to refill. I got class from 7-10 tonight so it's gonna be a late night for me haha. Details on that later..
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Re: Another 4th Gear Kickdown Question
well good luck with it tell us how it goes
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Re: Another 4th Gear Kickdown Question
so all you need is a small allen screw and some loctite? Does this hurt anything in the tranny doing this?
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Re: Another 4th Gear Kickdown Question
not a thing hurt. Just makes it easier to hold it wide open in fourth. Maybe just hurt yourself if it is held wot too long.
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Re: Another 4th Gear Kickdown Question
Why the hell didn't gm do this in the first place?
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Re: Another 4th Gear Kickdown Question
Well it's a big *** mess so far. Had to get all new tranny fluid and a new gasket for the pan. Draining it wasn't too bad but it just kept leaking all night. Pluging the holes was easy. It's still taken apart atm. More later. I also put in a torque converter lockup switch so I'll tell you guys how that is too.
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Re: Another 4th Gear Kickdown Question
Alright well I slapped a new filter in there (looks better, has a filter paper rather then the factory wire-mesh), and did the mod. You definately have to use your shifter like a manual shifter between 3rd-4th gear. However it DOES shift into 4th at wide open throttle. And I had to adjust my TV cable after I did the mod because it was shifting funky but now it's right on. I tried the Torque Converter Lockup Switch.. I didn't really see a difference. What should I look for with it on?
And also, I installed a set of MSD red ignition wires. $90. I noticed a difference right away. I had the stock wires installed so I figured they needed replacing. The engine rips a little harder now.
And also, I installed a set of MSD red ignition wires. $90. I noticed a difference right away. I had the stock wires installed so I figured they needed replacing. The engine rips a little harder now.
Last edited by Justin1989; 02-22-2009 at 04:16 PM.
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Re: Another 4th Gear Kickdown Question
you will notice the lock up more if you lock it up at slow speeds and gas on it
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Re: Another 4th Gear Kickdown Question
Alright well I slapped a new filter in there (looks better, has a filter paper rather then the factory wire-mesh), and did the mod. You definately have to use your shifter like a manual shifter between 3rd-4th gear. However it DOES shift into 4th at wide open throttle. And I had to adjust my TV cable after I did the mod because it was shifting funky but now it's right on. I tried the Torque Converter Lockup Switch.. I didn't really see a difference. What should I look for with it on?
For the TCC lockup switch, what is it that was added or changed? Is the stock ECM still in place and wired into the plug on the trans?
RBob.
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Re: Another 4th Gear Kickdown Question
Stock ecm. Just ran a wire from the top left port to the top right port and put a switch between them.
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Re: Another 4th Gear Kickdown Question
With the shifter in D (1, 2 or 3), and the TCC locked (switch on), it should feel more like a stick car. With an off throttle decel there should be engine braking.
You may also find that if driven in OD at low speeds that the engine will tend to bog a little. This is because of the TCC being locked when otherwise it would be unlocked allowing the torque converter to work.
RBob.
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Re: Another 4th Gear Kickdown Question
is it bad to run with the lock up on 95% of the time???? like keeping it on by jumping the 2 terminals on the ADL plug, like whats in the tech article
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Re: Another 4th Gear Kickdown Question
I've noticed that using the lockup switch at speeds over 70 mph is a bad idea. It takes much longer to accellerate.
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Re: Another 4th Gear Kickdown Question
i still wanna know about running it in lock up at like 95% of the time is bad for it
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Re: Another 4th Gear Kickdown Question
I'd assume it is, since it doesn't rotate in different ways and would cause a specific wear pattern..
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Re: Another 4th Gear Kickdown Question
Also if you read the tech article it says not to run around with it on all the time. lol
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Re: Another 4th Gear Kickdown Question
this is some really good info. prolly one of the best threads ive seen. i learned a lot here
thanks everyone.
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Re: Another 4th Gear Kickdown Question
Just an update. I've been driving the car with the holes plugged for 2 years now and it still shifts like a charm. Best mod I've done on my car for top speed. Tranny is still good and I believe this mod also gives increased fuel economy due to a slightly earlier shift point from 3rd gear to 4th. You can cruise at low rpms around 35-45mph and it won't downshift unless you really want it to.
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