gregs78cam

I just picked up a complete setup this week, mostly for the harness and TB, and it came with a 16147060 - BDPK, all for $75. I have the .def, and .ads for it, but I still have to get a HDR1, and GP1 for it if I want to use it. But my question is was this ecm used in the 91-93 instead of the '7747 just for the ability to control the electronic transmissions. And if so would I be able to use it with a 700R4 with the right .bin? I noticed the '7060 pin outs are almost word for word the same as '7747, so I am assuming the harness will only need the usual trimming. I want to use this on a 383 in an '81 Z-clone with RBob's 4-injector upgrade and dual TBs, in front of a 700R4. ANY info you guys have would be greatly appreciated.

RBob

iTrader: (1)

The '7060 was used on TBI engine (SBC & BBC) with the 4L80E transmission. Not sure if it can be used on a 700R4 with a TCC. But most likely there is an option flag for it in the calibration someplace.

RBob.

gregs78cam

just looked at the def in TPro, and it does show all of the TCC stuff, but also shows stuff for Trans pressure, downshifts, temps and slip. I am thinking it can be made to work.

gregs78cam

thanks RBob, I also have a 16168625 that I have been seeing as used with 4L60E. Would that be any better to use for this? I have been reading the "tbi guys-its time to update" thread and it sounds like a good usable pcm, but by time I got to about the 4th page I was starting to get lost with all the things they were trying to do. Am I understanding this right, the '8625 can use any .bin for a 0D, 0E, 31, E6, or 8C when tuned with the respective .xds?

dave w

I have experience with the '8625, and yes the '8625 can use any .bin for a 0D, 0E, 31, E6, or 8C when tuned with the respective .xds. My only experience has been with the OD, OE, and E6 bins.

The '8625 needs / should use a VSS. Not sure how to make a '8625 work with a 700R4 and the lockup requirements, but for the 4L60E the '8625 is factory. In my local area, rebuilt 4L60E's are less expensive than a rebuilt 700R4. Might have something to do with the need for "Special Electronics" when using 4L60E in an "Old School" hot rod.

Maybe the 700R4 will need / could use the '8625 trans input speed pins F2 & F3 directly from the 700R4 VSS? The 4L60E uses VSS Buffer pins F12 & F13.

dave w

jim_in_dorris

Hi, I am also converting from a 7747 $42 mask to an 8625 $0D mask. As near as I can tell, using the flags to tell it to use the TCC lockup ($400F bits 6 and 7) tells it that it is a non-electric transmission, and all the electronic transmission control code is skipped. I could be completely wrong about this, but if I am, my truck isn't going to work, so I hope it's correct. The VSS is only used for TCC on the 700r4 side, so you can pin it for that. see Fast's sticky for the pinouts.

gregs78cam

Thanks a lot dave and jim. I do have the vss buffer that was used in the van the 700r4 came out of just in case I need it. Have you guys made you own .xds or are you using one from somewhere else? I am wanting to use the most complete one I can find, so far I am just using what I can find on Moates' site. Thanks again guys.

dave w

I used the Advanced $OD.xdf I've not used a 700R4 with the $OD.xdf, so here is what I found.

dave w

gregs78cam

WOW, I had no idea that one was there. That is awesome. Thank you.

dave w

I still wonder, should pins F2 & F3 or pins F12 & F13 be used with the 700R4?

gregs78cam

I think I read about that where dimented24x7 was adding MAF to it because it needed a high freq input. I think it is in this thread a few pages in.

https://www.thirdgen.org/techbb2/sho...hreadid=270266

might try this one as well.

https://www.thirdgen.org/techbb2/sho...hreadid=272975

dave w

Thanks, I found this: No mention on the Pins F2 / F3 or F12 / F13?

gregs78cam

maybe this will help. There is more on page 4 of first link.

jim_in_dorris

https://www.thirdgen.org/forums/tbi/...rting-tbi.html

This is Fast355's sticky on updating your PCM. It uses F13 for the VSS signal

dave w

Thank you everyone!

Here is my plan, I will use the VSS output from 87 GMC 454 TBI TH400 on my TBI test bench.

dave w

gregs78cam

That is thread I was thinking of. Keep us updated dave as to how it works out.