What version and year is the best for the 4l60e and 4l80e
#2
Moderator
First a V6 4L60E will have a 298mm input shaft and will NOT directly bolt to any LS engine.
A 2003 through 2006 4L60E or 4L65E are slightly stronger than earlier ones.
The 4L65E has 5-pinion planets, 7-friction 3/4 clutch and a hardened input shaft; otherwise identical. Externally and electrically identical.
A 2007 likely would still work, but by 2009 the valve body was changed in ways that are incompatible with your PCM.
Sponsors like FLT, RPM and PerformaBuilt sell good Level-2 4L60E around $1500; these will be stronger than any stock unit.
There are lots of threads here on 4L80E conversion, not trivial.
NOTE: I learned more recently that even later model V6 4L60E will have the 300mm input shaft and therefore will bolt right up to an LS engine.
A 2003 through 2006 4L60E or 4L65E are slightly stronger than earlier ones.
The 4L65E has 5-pinion planets, 7-friction 3/4 clutch and a hardened input shaft; otherwise identical. Externally and electrically identical.
A 2007 likely would still work, but by 2009 the valve body was changed in ways that are incompatible with your PCM.
Sponsors like FLT, RPM and PerformaBuilt sell good Level-2 4L60E around $1500; these will be stronger than any stock unit.
There are lots of threads here on 4L80E conversion, not trivial.
NOTE: I learned more recently that even later model V6 4L60E will have the 300mm input shaft and therefore will bolt right up to an LS engine.
Last edited by mrvedit; 01-12-2016 at 08:50 PM.
#5
Moderator
I've repeatedly read Jake saying that the pre-97 have a stronger OD unit.
IIRC, a '93 has an older style internal wiring harness and connector pinout, but this is easily and inexpensively replaced with a new harness.
Also the pre-97 and 97+ units have their cooling lines in different locations.
All this is from memory, so let a 4L80E expert confirm or correct it.
IIRC, a '93 has an older style internal wiring harness and connector pinout, but this is easily and inexpensively replaced with a new harness.
Also the pre-97 and 97+ units have their cooling lines in different locations.
All this is from memory, so let a 4L80E expert confirm or correct it.
#6
I've repeatedly read Jake saying that the pre-97 have a stronger OD unit.
IIRC, a '93 has an older style internal wiring harness and connector pinout, but this is easily and inexpensively replaced with a new harness.
Also the pre-97 and 97+ units have their cooling lines in different locations.
All this is from memory, so let a 4L80E expert confirm or correct it.
IIRC, a '93 has an older style internal wiring harness and connector pinout, but this is easily and inexpensively replaced with a new harness.
Also the pre-97 and 97+ units have their cooling lines in different locations.
All this is from memory, so let a 4L80E expert confirm or correct it.
Trending Topics
#8
Moderator
Ronin, you are over thinking this.
At your non-adder power level any 4L80E will work very well.
Getting the older stronger OD unit from a Pre-97 (or some 98 and 99 as ZPG mentioned) is probably only important when you are going over 700HP and/or a very heavy vehicle.
Best? Buy a unit from Jake.
At your non-adder power level any 4L80E will work very well.
Getting the older stronger OD unit from a Pre-97 (or some 98 and 99 as ZPG mentioned) is probably only important when you are going over 700HP and/or a very heavy vehicle.
Best? Buy a unit from Jake.
#9
Ronin, you are over thinking this.
At your non-adder power level any 4L80E will work very well.
Getting the older stronger OD unit from a Pre-97 (or some 98 and 99 as ZPG mentioned) is probably only important when you are going over 700HP and/or a very heavy vehicle.
Best? Buy a unit from Jake.
At your non-adder power level any 4L80E will work very well.
Getting the older stronger OD unit from a Pre-97 (or some 98 and 99 as ZPG mentioned) is probably only important when you are going over 700HP and/or a very heavy vehicle.
Best? Buy a unit from Jake.
#10
So I have a 2000 model LS 5.3 and I'm planning to run off the OEM ECM/PCM, will it have any issues if I choose a later model 4L60E? Or will it plug right in? I ask, because it's stated above that the 2003 - 2006 units are better and I'd like to go that direction if it wont cause me issues.
My application is a 2004 TJ Rubicon Jeep Wrangler with the 5.3 built to about 400hp.
Thanks,
LM
My application is a 2004 TJ Rubicon Jeep Wrangler with the 5.3 built to about 400hp.
Thanks,
LM
#11
Moderator
An LS1 PCM will properly run a 2003-2008 4L60E/4L65E or even 4L70E. Somewhere around '09 an incompatible change was made to the VB and the trans connector was changed too.
Later models '05+ will have ISS (Input Speed Sensor), but it doesn't matter because the LS1 PCM will not even connect to it. (Note that a '05+ TCM absolutely requires ISS.)
Later models '05+ will have ISS (Input Speed Sensor), but it doesn't matter because the LS1 PCM will not even connect to it. (Note that a '05+ TCM absolutely requires ISS.)
#14
TECH Fanatic
SSR (6.0L)
Trailblazer SS
Any 1500 Truck/SUV with a 6.0L (Silverado SS/Vortec Max/Denali)
GTO (6.0L)
Hummer H2
C6 Vette (LS2), Not compatible!
Buying a used 4L65E/4L70E is a good way to get screwed! They don't last any longer....In fact they usually have shorter life spans because they are put behind 6.0L's.
Wreaking yards will sell you a 4L60E in a heartbeat at 4L65E prices! Without "Broadcast Codes".....You cant tell by looking at them.
Trailblazer SS
Any 1500 Truck/SUV with a 6.0L (Silverado SS/Vortec Max/Denali)
GTO (6.0L)
Hummer H2
C6 Vette (LS2), Not compatible!
Buying a used 4L65E/4L70E is a good way to get screwed! They don't last any longer....In fact they usually have shorter life spans because they are put behind 6.0L's.
Wreaking yards will sell you a 4L60E in a heartbeat at 4L65E prices! Without "Broadcast Codes".....You cant tell by looking at them.
#15
Hello MRVEDIT , i did a LS2 4L65E swap in my 87 Buick T type . I see where you said
that a '05+ TCM absolutely requires a ISS , OK i know my LS2 is a 07 and has a 58 reluctor window crank , but not sure what year my 4L65 is, i bought it from a guy who worked at michigan motors back in 2010, it was brand new on the pallet and still all wraped up in GM plastic etc , he said he had it for awhile i think a few years , anyway besides the big plug it has a small sensor on the side of it for a two wire plug, is this the ISS sensor? , where is the VSS sensor or are they the same thing,
Car is still under the knife and never been started but shes coming along good so far.
that a '05+ TCM absolutely requires a ISS , OK i know my LS2 is a 07 and has a 58 reluctor window crank , but not sure what year my 4L65 is, i bought it from a guy who worked at michigan motors back in 2010, it was brand new on the pallet and still all wraped up in GM plastic etc , he said he had it for awhile i think a few years , anyway besides the big plug it has a small sensor on the side of it for a two wire plug, is this the ISS sensor? , where is the VSS sensor or are they the same thing,
Car is still under the knife and never been started but shes coming along good so far.
#16
Moderator
The small side sensor is the VSS.
Count the number of pins on the main trans connector.
A trans with ISS will have 15 pins while a non-ISS only has only 13 pins.
See post #6 on the following thread for a pinout:
http://www.tbssowners.com/forums/4l7...-06-4l70e.html
Count the number of pins on the main trans connector.
A trans with ISS will have 15 pins while a non-ISS only has only 13 pins.
See post #6 on the following thread for a pinout:
http://www.tbssowners.com/forums/4l7...-06-4l70e.html
#18
Moderator
If that is incorrect and you know how to do it, please post the details! I would love to be incorrect on this.
#19
So I have a 2000 model LS 5.3 and I'm planning to run off the OEM ECM/PCM, will it have any issues if I choose a later model 4L60E? Or will it plug right in? I ask, because it's stated above that the 2003 - 2006 units are better and I'd like to go that direction if it wont cause me issues.
My application is a 2004 TJ Rubicon Jeep Wrangler with the 5.3 built to about 400hp.
Thanks,
LM
My application is a 2004 TJ Rubicon Jeep Wrangler with the 5.3 built to about 400hp.
Thanks,
LM