4L80E with 16168625 ECU, is this normal?

[wanderingturtle]

Based on the information available to me, BJDR is a 1994 definition $OE (4L80E) PCM 16196395.
Superseded to BLHH / PCM 16197427 then superseded to BYXN / PCM 16197427

dave w

It also came in this 16168625 PCM and runs everything just fine :) I would say that I have the 16168625 PCU with factory 4L80E bin file.

Do you still have your 16168625? Do you want to try this bin in it and see if it will shift? Or maybe it's like they said, and mine is an early production '94 and they changed the transmission sometime partly through the year and the later ones require a different PCU. I'll see if I can find out when my van was made.

[1BadAction]

The force motor changed in 94, but despite what some say, I noticed no difference when swapping to the later 614hz model (the original early force motor is NLA) with either the 7427 or the 6395 PCM. Absolutely ZERO difference. However, I do not like the BJDR bin as a starter. It didn't seem to act right so I went to the BHDH as my basis and all was well. Additionally, there are some P chassis and other big truck bins floating around out there and the ones I have tried all seem to suck. The parameters that are different are not defined, but they sure make the truck act odd.

[dave w]

It also came in this 16168625 PCM and runs everything just fine :) I would say that I have the 16168625 PCU with factory 4L80E bin file.

= Unicorn

[wanderingturtle]

I do not like the BJDR bin as a starter. It didn't seem to act right so I went to the BHDH as my basis and all was well.

What engine was this with?

[89S10_Project]

I also picked up a couple of this 7427 PCMs from a junkyard yesterday. Got them for 20 bucks each, no guarantee. I'm gonna try just modifying my bin to meet my needs, but I'll also try burning my bin to a chip and running it in those PCMs to see what happens.

Oh, and ain't nobody got time to wait for yet another adaptor to be shipped!Attachment 10761

Feel like selling one of those ECUs?

[wanderingturtle]

Feel like selling one of those ECUs?

Yes, I will be selling one. I need to test them both first.

[89S10_Project]

I seem to remember reading that early and later 4l80e used different solenoids to shift, the early 4l80Es would work with an 8625, but the later 4l80Es used a pwm selenoid and the 8625 could not provide the pwm. I could be wrong, but I seem to remember reading that somewhere while I was researching the switch.

I am almost certain this is the case, and applies to the 4l60e as well. I'm researching possible upgrades from a 700R4 at present.

[89S10_Project]

Yes, I will be selling one. I need to test them both first.

Roger that, PM sent!!

[wanderingturtle]

I just found in my VE table for Open Throttle, the value for 4400 RPM @ 20 is about half of the neighboring cells. Is this most likely just a data transferring error? Or would there be some obscure reason for this?

[wanderingturtle]

Ok, I downloaded the BJDR bin and compared it to mine, and they are the same. What is up with this? How often do you see discrepancies like this in factory bins?

[1BadAction]

What engine was this with?

TBI 454 in my sig.

[Chewy1576]

Not sure where else to upload this, but I came across a 16197427 / BLHH ECM out of a K2500 Suburban. I couldn't find a .bin for BLHH anywhere, so I will provide it here.

[MAC]

The 4L80E used either definition $OE or $31. The 16168625 used definition $E6 (4L60E). I've yet to find a factory 16168625 PROM with definition $OE / $31.

dave w

Very new here but learning. Please consider all of the following with a grain of salt because... new guy.

So I seem to have a 16168625 that uses a definition $0E. Everything about the truck would lead me to believe that it is factory original. Code on the memcal is BBMC (which, as I understand, is supposed to be $E6). The reason I think it is that the only way I can see data from my Autoprom in Tunerpro is when I have an $0E adx file loaded.

The truck is a 1993 TBI 5.7 4L60E 4WD.

I just ordered a HDR1 today so I will update when I get a chance to grab the stock BIN.

[Racprops]

I am building a 1993 Chevy G20 Van. It came with 350 TBI and 4L60e I am replacing this set up with a 383 TPI and 4L80e.

Reading this thread seems to strongly suggest running a 16197427 OR??

A few questions, which will plug into the current ECM hardness??

As this is a rod trip van a stock ECM shifting will be fine.

So what year and model truck will be best to search for??

Rich

[tayto]

should have red&blue connectors same as 7427, you will need to add another set of wires for the extra 4l80e speed sensor and probably repin some stuff

find a pcm that has 6395 or 7427 they will both run the 4L80E.