4l80e swap on a 98 z28 camaro
trans go 4l80e-3 trans go 4l80e-3 is a manual valvebody conversion for the trans. i am in the same boat you are with my GTO. im in the process of rebuilding a 4l80e now for it. and i am going with this kit. that way my car still sees it as a m6 car. just waiting on the kit to get here to see how it all works
jake
jake
The TransGo HD-3 kit does convert the VB's to full manual.
The kit needs some changes to be effective.
It has a common complaint of a too slow 2-3 shift. This needs to be addressed.
I've also recently seen issues with a high rpm (hot only) WOT 1-2 shift issue. TransGo suggests drilling the holes that feed the 1-2 shift valve larger. I am also installing a heavier 1-2 shift valve spring to help exhaust it.
The kit will be receiving some major changes in the near future. It will be getting the sandwiched plate like the HD-2 kit got a year or so ago.
The kit needs some changes to be effective.
It has a common complaint of a too slow 2-3 shift. This needs to be addressed.
I've also recently seen issues with a high rpm (hot only) WOT 1-2 shift issue. TransGo suggests drilling the holes that feed the 1-2 shift valve larger. I am also installing a heavier 1-2 shift valve spring to help exhaust it.
The kit will be receiving some major changes in the near future. It will be getting the sandwiched plate like the HD-2 kit got a year or so ago.
how exactly does this kit contol line pressure? i thought i read that it runs a vacuum modulator? how does that work?
sorry for the thread jack
i been trying to find out more about this kit
thank you jake
sorry for the thread jack
i been trying to find out more about this kit
thank you jake
Thread Starter
Teching In
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From: Georgia
4l80e - tci has manual valve body,with transbrake this part just released, will this kit work without computer, and what about every day driving? part number,,is tci 274501,, about 600 bucks!!
Thread Starter
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From: Georgia
Heeelp!!! come on guys still need help,, getting close and maybe this post will help out some one esle. read my earlier posts and help me out,, any thoughts on stall speed 4 the street,,3;90 gears,,cam starts pulling about 2500,,all my specs on motor is a few posts back ,,please read and help me out thanks in advance!! 3000 stall or 3500. worried 3500 is to much spraying 200 shot single stadge?? HEEELP!!!!
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Verdad Gallardo Thread Starter
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From: Georgia
k thanks,, but still alot of questions i need answered,,,read my other posts please!! what about this new tci trans brake, valve body ,ok on steet?-will my stock shifter work with this part? p#274501,,its only been avalible 4 a couple of months!! thanks in advance!!!
ally sue!
ally sue! 
I'm in the process of the same swap. If I were you, Id go with the 99 pcm swap and run the trans go stage 2 hd kit. I wouldnt want to give up the stock shifting. I actually have an extra 99 pcm if you are interested $100. Their is a right up somewhere on changing all the pins in the pcm connectors from the 98 to the 99 ends. I'm going with the Circle D converter for the 4l80e. They have a post on like page 5 of this section, They had a sale on their converter and it is a really nice converter(my opinion best out right now) Hope some of this helps you out.
Nick
Nick
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From: wichita
I'm seriously confused I have gone through a few trannys and wanna switch to 4l80 or tv 400 but need a write up on everything todo my car is a 98 I can select my own converter I have an hptuners programmer but dunno if that's useful for the computer problem
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From: sneaking in your back door as you leave!/cartersville ga
a 98 computer WILL NOT control a 4l80e... you will have to get a 99-02 comp, harness. and then if you like all your gauges workn you will need a new dash cluster and fuel tank to do the complete swap 100% correct
or u can get a standalone comp (tci or equiv) to control the transmission, but then you are adding more cost
or u can get a standalone comp (tci or equiv) to control the transmission, but then you are adding more cost
a 98 computer WILL NOT control a 4l80e... you will have to get a 99-02 comp, harness. and then if you like all your gauges workn you will need a new dash cluster and fuel tank to do the complete swap 100% correct
or u can get a standalone comp (tci or equiv) to control the transmission, but then you are adding more cost
or u can get a standalone comp (tci or equiv) to control the transmission, but then you are adding more cost
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From: sneaking in your back door as you leave!/cartersville ga
didnt say u had too....but to get your fuel gauge to function properly you do..if you change the harness. just depends if you like all your gauges working
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From: sneaking in your back door as you leave!/cartersville ga
amazing what a 1 minute search will reveal
https://ls1tech.com/forums/automatic...l80e-swap.html
https://ls1tech.com/forums/pcm-diagn...-question.html
https://ls1tech.com/forums/pcm-diagn...-car-99-a.html
just search "swapping plastic tank" and "4l80e swap" and you will find all the info you need
https://ls1tech.com/forums/automatic...l80e-swap.html
https://ls1tech.com/forums/pcm-diagn...-question.html
https://ls1tech.com/forums/pcm-diagn...-car-99-a.html
just search "swapping plastic tank" and "4l80e swap" and you will find all the info you need
Last edited by red83; Oct 16, 2009 at 06:58 AM.