4bt swap 4l80e conversion

[454cid]

No such thing as an 80 without the e. That I do know. Early trucks had a TH400. The 60 without an e was simply a 700r4 renamed to fit the new GM transmission nomenclature.

The th400 was briefly labeled as a 3l80. No 4l80, though.

 

[Dr1rrrr]

I am already running tach signal converter so that part will be easy and I am also using a stock temp sensor so that should be good so basically I just need the tps the only weird thing is my temp gauge seems to read about 10 to 15 degrees cold so will that mess with trans. also i do have a friend of mine that can tune the trans.

 

[smdk2500]

No such thing as an 80 without the e. That I do know. Early trucks had a TH400. The 60 without an e was simply a 700r4 renamed to fit the new GM transmission nomenclature.

Did not know there wasn't a 4l80 i guess i just assumed since there was a 4l60. I did know the 60 was just a renamed 700r4. Thanks for teaching me something.

 

[smdk2500]

Even with the stand alone controller you still need to feed it an rpm signal. I believe the op was trying to minimize things by using what he already had, the stock pcm, the 4x crank signal is easy to duplicate, I don't know what the deisel stand alone uses?

They have a rpm sensor in the valley. Basically where a distributor would be on a gasser. And a TPS on the Injection pump.

 

[618 Syndicate]

Did not know there wasn't a 4l80 i guess i just assumed since there was a 4l60. I did know the 60 was just a renamed 700r4. Thanks for teaching me something.

@454cid is right about the th400 being renamed a 3L80 also.

 

[1998_K1500_Sub]

One year of the 80, I *think* 92 has a standalone trans controller in the diesels. Maybe others as well.

Is there a way to "tune" that standalone controller, e.g., for up/down shifts, TCC lock/unlock, line pressure,... just to name a few.

 

[618 Syndicate]

Is there a way to "tune" that standalone controller, e.g., for up/down shifts, TCC lock/unlock, line pressure,... just to name a few.

That I don't know. I think Jet makes (or made) a transmission controller, but I'm not sure if it interfaces with the standalone trans controllers.

 

[tayto]

Is there a way to "tune" that standalone controller, e.g., for up/down shifts, TCC lock/unlock, line pressure,... just to name a few.

yes & no. there was stuff out there at one point tracking it down might be an issue. if you were going this route I would just use a 94/95 TBI '7427, but honestly you're probably better off buying a standalone controller if you don't need fuel management....

EDIT: from what I remember the hack and/or definition file was incomplete. i do remember someone using it successfully on the gm-efi mailing list but this was 15+ years ago now...

 

[ralmo94]

Actually if you can pick up an 0411 from a salvage yard that wouldn't cost very much, as you said earlier it is documented how to make one a stand alone trans control. All you would need to tune one is a obd dongle that interfaces with ls droid or pcm hammer and use universal patcher,
That would also give you a towhaul switch cabapility

You still need crank sensor and the 4x signal would not be difficult to fab. I seen a post on 4bt forum years ago a guy made slots in a pulley and mounted a sensor near it. It doesn't have to be times right, just needs to give rpm signal.