4L80E swap in depth w/ pics
Registered User
Joined: May 2001
Posts: 1,511
From: fort worth/burleson Tx
Man I am no where near as talented as you when it comes to wire crap up, lol. Sucks but I had to get the TCI control box, heard it was plug and play.
Critter I would like to see someone who could build me a 4L60E for 1400 that I could beat on day in day out (street car) at 650-700RWHP. The best guy I know told me the way I drive it about 1 every year at 2200 a pop for a 4L60E on average. In my opinion you may not lose any time with the 4L80E. I know its around 90lbs heavier on average (converter Size etc) but I really like the idea of the 2.48 first gear. Traction could be easier to attain opposed to the 4L60E's 3.06 and the car will have a better shift extension meaning it won't drop as many RPM's between shifts with the 4L80E. Many guys I see don't loose any time at all.
Great good to know, My buddy does have a Laptop so I may just borrow his. Does it come with the hookups to the car to make changes instant via laptop?? I suppose it does but I need to ask, lol
Critter I would like to see someone who could build me a 4L60E for 1400 that I could beat on day in day out (street car) at 650-700RWHP. The best guy I know told me the way I drive it about 1 every year at 2200 a pop for a 4L60E on average. In my opinion you may not lose any time with the 4L80E. I know its around 90lbs heavier on average (converter Size etc) but I really like the idea of the 2.48 first gear. Traction could be easier to attain opposed to the 4L60E's 3.06 and the car will have a better shift extension meaning it won't drop as many RPM's between shifts with the 4L80E. Many guys I see don't loose any time at all.
Great good to know, My buddy does have a Laptop so I may just borrow his. Does it come with the hookups to the car to make changes instant via laptop?? I suppose it does but I need to ask, lol
One of our Customer's has finally hit the 9's after 8 months of running our Pro Race 4l60e through many low 10 second passes.
The following is an excerpt from a thread on Camaroz28.com about CPT's work. "I wanted to let you and everyone know how good of a tranny this actually was. I got the Pro Race Tranny.....yea it was 1600.00 but it was well worth it after dealing with a local guy and going through 5 tranny's I finally found CPT. I got my stock 4l60 to a 10.9 and it finally took a ****. With Franks tranny I was going consistant 10.3 and pulling 1.4 60fts. I had my best ET ever which was a 9.7 @ 144.57 mph and a 1.39 60ft."
Congrats Hodges we knew you could do it.
Frank
CPT
cut and paste off his site. i see what you mean with the daily driver and the 1st gear ratio tho. but if that one is running 9's i suppose you should be ok with one. its 1400 plus any hard parts. just letting you know its an option.
Registered User
Joined: Oct 2002
Posts: 969
From: Arkansas
That is pretty impressive, I like the MPH that car pulled plan on doing someting similiar. But I really do feel like I'll sleep better at night with the 4L80E in my car, plus I already have most of the stuff, lol.
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Joined: Sep 2002
Posts: 1,942
From: kitchener/Ontario
OK ill will do a try to answer some of you Qs.
Dip stick, yes the lokar will work, we use a "short" one, ill think it was around 25", widh a little cutting and bending on the top fasterner it will fit perfect to the bolt hole between inj 6 and 8.
Cutting, yepp just a little cutting on the driver side http://home.koping.net/u3243a/tillfalliga/DSC02272.JPG
Tranny coler lines, yepp, you could reuse them (little bending) but it isnt gonna be much room to "torque" them, i changed them after oure 2nd converter change....
Tuning of the TCI box? no idea, we use the stock PCM
shifter, yes you can use the stock shifter, I did build an offset mount under the tranny but its possible that you can use the stock one and adjust the shifter cable.
Dip stick, yes the lokar will work, we use a "short" one, ill think it was around 25", widh a little cutting and bending on the top fasterner it will fit perfect to the bolt hole between inj 6 and 8.
Cutting, yepp just a little cutting on the driver side http://home.koping.net/u3243a/tillfalliga/DSC02272.JPG
Tranny coler lines, yepp, you could reuse them (little bending) but it isnt gonna be much room to "torque" them, i changed them after oure 2nd converter change....
Tuning of the TCI box? no idea, we use the stock PCM
shifter, yes you can use the stock shifter, I did build an offset mount under the tranny but its possible that you can use the stock one and adjust the shifter cable.
how did you get the stock pcm to control the tranny ??? i thought the stock pcm would not work ????
Registered User
Joined: Jan 2003
Posts: 505
From: Sweden
The big problem is that the "electric shift pattern" isnt the same on 4l60e and 4l80e, I inverted some signals (dont remember wich now). Its also little tricky to get the lockup to work perfect.
The only thing that i couldnt fix perfect was the line pressure so i bought a vac mod for that.
Schematics? no i havent done it yet, Can make one when the winter is over and the car is back at home. (some of the resistors was changed after i designed it so i cant just looke at my install notes)
The only thing that i couldnt fix perfect was the line pressure so i bought a vac mod for that.
Schematics? no i havent done it yet, Can make one when the winter is over and the car is back at home. (some of the resistors was changed after i designed it so i cant just looke at my install notes)
Registered User
Joined: Jan 2003
Posts: 505
From: Sweden
OK
So you belive that our 3600 lbs car will run 9.2 widh one of youre 4l60e?
Sorry to say but i dont belive that, and absolutly not race after race etc.
ake eliasson
So you belive that our 3600 lbs car will run 9.2 widh one of youre 4l60e?
Sorry to say but i dont belive that, and absolutly not race after race etc.
ake eliasson
Last edited by Lisa33; Mar 2, 2007 at 01:39 PM.
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Joined: Oct 2002
Posts: 969
From: Arkansas
I like to have our customers keep the 2/10 they're throwing away with the 4L80E. An '80E won't take you anywhere one of our '60E's can't.
In my opinion the 2/10ths thing is all realtive to how the car is setup. From GM the 4L80E is about 90lbs heavier than the 4L60E. We need to take into account the stock 4L80E converter weighs about 75lbs from what I have seen. I have a stocker LS1 TQ converter in the shop that weighs no were near that. When I do the swap I will get a complete comparison.
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Joined: Oct 2001
Posts: 2,684
Registered User
Joined: Mar 2002
Posts: 3,634
From: Newark, Delaware
Frank
CPT
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Joined: Oct 2001
Posts: 2,684
That's really a pretty good deal, especially for the local racers that wouldn't have to pay shipping.
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Joined: Sep 2003
Posts: 5,907
From: The Wild West
Guess all the slow 4L80E guys should pull those 4L80E's out and go back to a CPT 4L60E 
I cant firgure out why everyone over at LS1 tech are running such good times with these 4L80E's. 
On topic:
Has anyone tried using the stock M6 crossmember to support a 4L80E? I could fab up one like Orion did, but it would save some time if I knew the M6 one would work.
-Dustin-
I cant firgure out why everyone over at LS1 tech are running such good times with these 4L80E's. On topic:
Has anyone tried using the stock M6 crossmember to support a 4L80E? I could fab up one like Orion did, but it would save some time if I knew the M6 one would work.
-Dustin-
Registered User
Joined: Aug 2002
Posts: 36
From: Atlanta, Ga
I used the BMR crossmember to put the 80e in my 00 fbody. The 80e along with the rossler tbrake is the ticket...fully automatic shifts with a tbrake A 60e will not hold up to my 3920# raceweight...308 gears...28" slicks and up to 900rwhp/tq
A 60e will not hold up to my 3920# raceweight...308 gears...28" slicks and up to 900rwhp/tq
Registered User
Joined: Sep 2003
Posts: 5,907
From: The Wild West
-Dustin-
Registered User
Joined: Mar 2002
Posts: 3,634
From: Newark, Delaware
Frank
CPT
