[Mystery Bird]

I finally drove my car yesterday after converting it from the 4L60E to the 4L80E. The conversion went pretty good with not much modification or fabrication needed. Still have some transmission tuning to do but...wow what a different animal it is. It shifts so solid and strong it doesn't even compare to the 60.

I did a complete rebuild myself, this was the first time doing the 80. I have done a few 60's before but the 80 is sooo much easier to rebuild and cheaper. I want to thank Dynamic396, Slow67, and Jake's Performance for their help with parts and advice.

Once I get some miles and the tuning is complete it's track time.

 

[sweetbmxrider]

Badass man. What converter you running?

 

[Racy Roadmaster]

Is the new trans still a 4 speed? Is that the trans that you showed pictures of that was about 1.5x the size of the 4l60e? ed

 

[five7kid]

The 4L80E is basically a TH400 with overdrive and lockup torque converter added, and electronic control. So, yes, 4-speed.

 

[Racy Roadmaster]

I may be incorrect about this, but I thought I read somewhere that the
4L80E had alot more drag than the 4L60E, are my facts correct or not. ed

 

[five7kid]

"...a lot..." is probably an overstatement.

If you have a 4L60E optimized and just swap in a 4L80E, you'll see some reduction in power due to the increased rotating mass, and probably slight ET increase due to lower numerical 1st gear and increased mass going down the track.

But, the reason to put in a 4L80E is it will stay together under power loads that would eventually kill a 4L60E. And, if you have any smarts, you'll optimize the combination for the way the 4L80E operates.

 

[Mystery Bird]

Badass man. What converter you running?

Edge Racing 4000

The 4l80e is not much bigger than the 60 and as far as rotational mass the same. Also, there are build technics and parts to help overcome some of that. Some claim better ET's due to the less RPM drop between gears with the 4l80e.

five7kid nailed it for the reasons I swapped though.

 

[Mystery Bird]

Did some tuning tonight on the trans, shift points, TCC lockups, and basically tuned out the PWM functions. The more I tune the more I like it.

 

[ShowNoMercy]

Did some tuning tonight on the trans, shift points, TCC lockups, and basically tuned out the PWM functions. The more I tune the more I like it.

Now I was under the impression that the non segment swap tune was so you could have PWM and not the 80e truck segment of just lock up or not.



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[Mystery Bird]

I just didn't like the sloppy in and out of the TC. I wanted it to be on or off, I like the way it feels better and is supposed to make converter last longer.

 

[sweetbmxrider]

Keep this thread up to speed with your conversion!

 

[mightyquickz28]

Excellent work! Glad to see you made it happen.

 

[Mystery Bird]

Excellent work! Glad to see you made it happen.

Thanks,


Also, I've been PMed about what PCM. I'm using the stock OBD1 PCM to control the 80.

 

[BLK WS6]

Mystery did you have to run special torque converter for the 80e to work with the lt1 flexplate?

 

[Mystery Bird]

I had the TC built to my specs and so it would bolt right up to the stock LT1 flywheel. It didn't cost any extra.

 

[BLK WS6]

Is that the only option? Obliviously it's the best option if buying new. Did you go single or triple disk?

 

[ShowNoMercy]

Is that the only option? Obliviously it's the best option if buying new. Did you go single or triple disk?

If you are sticking with a 153 tooth flexplate then yes, thats your only option.

Otherwise, you can step up to the 168 tooth flexplate which also means aftermarket starter, and then you can have the larger 80e pattern, and smaller 60e pattern. Also means billet flexplate options open up.

I run a FTI triple disk small pattern for a 153 tooth flexplate.



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[Mystery Bird]

I only have the baby single disk lockup.

 

[Mystery Bird]

Just an update, this is the third year with my home built 4l80e. I street beat and drag race it and I have to say it's still as solid as can be.

 

[Tinman59]

Mystery Bird, I am getting ready to do this to my Camaro, And I am having a HECK of a time findin out info on the resetting of the shift solenoid settings. could you elaborate on that, or PM me, Please?? I have a licensed version of Tuner Pro RT, I kind of understand, but either I have the wrong mask or the wrong bin??? I have EFILive as well and do understand it, thought that this would be easer. it feels a lot like going from WINDOWS 7 to DOS, LOL.