Compatable 4L60E's
Compatable 4L60E's
I'm picking up a complete running 5.3L for $300 within the next couple of weeks, so I'm on the hunt for a transmission. As much as I want to keep the Berlinetta a manual, a T56 doesn't fit in the budget and I've got to get the car back on the road in a hurry. What year 4L60E's are compatible with the Gen III/IV motors? If any of the pre 1999 ones work, are there any modifications that need to be made?
Thanks!
Thanks!
Re: Compatable 4L60E's
Id avoid 94 and older 4L60E's, they are pre PWM
The non 360* bellhousing transmissions require the crank hub kit even if they are electronic
The benefit is that the E class trans can be controlled by the LSx PCM even though it predated it
The non 360* bellhousing transmissions require the crank hub kit even if they are electronic
The benefit is that the E class trans can be controlled by the LSx PCM even though it predated it
Supreme Member
Joined: Nov 2008
Posts: 1,545
Likes: 10
From: South Carolina
Car: 85 2M6, 87 'Bird 88 'burb
Engine: LX9, LG4, L05
Transmission: F23, 700r4, 700R4
Axle/Gears: 3.63, 2.73, 4.10
Re: Compatable 4L60E's
What is PWM, and why is it better than a non PWM trans?
Re: Compatable 4L60E's
Definition, not very useful for this purpose though
http://en.wikipedia.org/wiki/Pulse-width_modulation
From LT1swap.com
IN a nut shell, PWM gives better control of the TCC at the cost of one additional wire to the trans
PWM is cast into the from pump of all 95+ trans for easy recognition
http://en.wikipedia.org/wiki/Pulse-width_modulation
From LT1swap.com
1994 started first year for 4L60E as the automatic trans option. This is the electronically controlled transmission. The 94-95 PCM's are identified by service number. 16188051. All 94+ LT1 PCM's are aluminum in color with 4 rectangle plugs. 94-95 PCM's can be flashed through the diagnostic port using rather inexpensive hardware and software. Click here for more info on that. In 1995 the 4L60E changed slightly, and an additional solenoid was added to the valve body. This required an extra wire to be added for 1995 models. You can determine 94/95 harnesses by looking for Pin U on the transmission connector. Also, 1994 4L60E transmission WILL NOT work properly with 96-97 PCM's.
PWM is cast into the from pump of all 95+ trans for easy recognition
Joined: Jul 1999
Posts: 876
Likes: 2
From: St. Louis
Car: RS
Engine: LS1
Transmission: T56
Axle/Gears: 9" for the ladies
Re: Compatable 4L60E's
PWM is slipping the TC clutch for the sole purpose of better mpg around town and can be bad on aftermarket converters.
The solenoids for it in lots of GM vehicles start to wear out after awhile too, bleeding pressure by.
Myself and lots of people disable it.
The solenoids for it in lots of GM vehicles start to wear out after awhile too, bleeding pressure by.
Myself and lots of people disable it.
Trending Topics
Supreme Member
Joined: Nov 2008
Posts: 1,545
Likes: 10
From: South Carolina
Car: 85 2M6, 87 'Bird 88 'burb
Engine: LX9, LG4, L05
Transmission: F23, 700r4, 700R4
Axle/Gears: 3.63, 2.73, 4.10
Re: Compatable 4L60E's
so in other words, if I don't want to toast my 3000 stall vigilante use a non PWM, If I want better mileage, use a PWM, correct?
Supreme Member
Joined: Nov 2008
Posts: 1,545
Likes: 10
From: South Carolina
Car: 85 2M6, 87 'Bird 88 'burb
Engine: LX9, LG4, L05
Transmission: F23, 700r4, 700R4
Axle/Gears: 3.63, 2.73, 4.10
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Maybe I'm just a simpleton, but when I was considering an LQ4/4L60E swap (had the LQ4, didn't have a 4L60E, did have a TH700R-4), it wasn't making sense to get anything earlier than a '98 4L60E.
Supreme Member
Joined: Nov 2008
Posts: 1,545
Likes: 10
From: South Carolina
Car: 85 2M6, 87 'Bird 88 'burb
Engine: LX9, LG4, L05
Transmission: F23, 700r4, 700R4
Axle/Gears: 3.63, 2.73, 4.10
Re: Compatable 4L60E's
PWM is a new concept to me, but if I'm understanding this dialogue correctly, you can simply program out PWM.
Maybe I'm just a simpleton, but when I was considering an LQ4/4L60E swap (had the LQ4, didn't have a 4L60E, did have a TH700R-4), it wasn't making sense to get anything earlier than a '98 4L60E.
Maybe I'm just a simpleton, but when I was considering an LQ4/4L60E swap (had the LQ4, didn't have a 4L60E, did have a TH700R-4), it wasn't making sense to get anything earlier than a '98 4L60E.
Banned
iTrader: (12)
Joined: Jul 1999
Posts: 12,212
Likes: 13
From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: Compatable 4L60E's
Unless the 4L60E is out of a 4th gen...What are you gonna do about the torque arm? Get a relocation mount?
Supreme Member
Joined: Nov 2008
Posts: 1,545
Likes: 10
From: South Carolina
Car: 85 2M6, 87 'Bird 88 'burb
Engine: LX9, LG4, L05
Transmission: F23, 700r4, 700R4
Axle/Gears: 3.63, 2.73, 4.10
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The OP is talking about a 5.3, which is LSx family. My LQ4 was 2004, also in the LSx family.
If you're looking at non-f-body 4L60E's, you'd better know exactly what you're getting.
Re: Compatable 4L60E's
Tailhousing is easy to swap. V6 or V8 makes no difference. 360* bellhousing units used a 6 bolt tail. Earlier used a 4 bolt style which swapped with the 700R4 and 4L60's
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Are you talking about the tailhousing not being different between V6 and V8, or the transmission itself not being different between V6 and V8?
Thread
Thread Starter
Forum
Replies
Last Post
