It's been a few years but back in January 2022 I was able to get the Flathead Ford running perfectly with the 7747 using the AT28C64 chip. My programmer worked 100% and I ended up making 29 changes...

Picked up the TBI with the adapter today, 100,000 miles on the truck, really nice.

I took a picture of the manifold it came from and now I am wondering if it will work with a standard Q-jet...

Mmmm, ya good point. I won't know until spring when the snow melts and I can get the car out of the shop and put the hood on. I painted it and it still needs some reassembly. I think there will be...

Thanks for the link, some good info in there.

So I got some pics of the '87 TBI and I have never seen anything like this, it looks like it has an adapter plate made for a quadrajet as part of the...

Cool, thanks for the quick reply.

I think I should probably just pickup everything I can :innocent2: then I can mix and match as required, as long as people aren't asking the moon. My harness is...

Hi guys,

After a 1 year break I am back to work on my '68 Firebird TBI conversion for the Pontiac 350 (which may become a 400 or 455 one day). I have a complete system from a '95 C-1500 4.3 but I...

I am still pretty new at this but I have been reading and learning and have tuned a 7747 pretty well so far on a '49 Ford flathead. The only thing I can contribute at this point would be to ask if...

I had a look at the coils available from my local supplier, the BWD is (CDN) $47, AC Delco is $62. As this is a critical component, if it were me, I would buy a new pickup coil to eliminate the...

Hi John,

It sounds like you are well on your way, good job. Sounds like you are handy in machining, is there any way you could modify or graft a GM TBI distributor onto your AMC bottom half? It's...

I decided I want to implement VSS on my TBI projects and the old 747 needs 2 ppr on the speedo cable, or 2000 pulses per mile, and since north american cars all seem to use the 1000 speedo cable...

I successfully read the 4.3L BIN file, it's BJWX from the '96 7427 and if it's new I'll upload it to the BIN thread.

Cheers

Okay it seems the ECM/BIN file threads are locked and I can't post...

This is too funny not to share...

I stripped down the new harness today and removed the superfluous wires, it's amazing how many wires are not needed. The whole harness was covered in oil so I...

Thanks Dave,

I am actually using a manual BIN but I still want to use the VSS as I have read about drivability issues, coming to a stop, engine quitting etc. And one day I may want to try HWY...

I am now at the point in my '49 F-47 build that I need to get the 2000 ppm pulse signal for the 7747 ECM. I have numerous options and want to use OEM solutions from the JY or what I have on hand,...

I lucked out too. The truck I stripped was built 10/95, which technically is a '96. I was very happy to find the 7427 and red/blue harness. Stripping of all the old loom tomorrow and get it ready for...

Hi Taylor,

You're confusing my 2 builds, this thread is about my upcoming '68 Firebird TBI swap so I am gathering parts for a completely new setup. I thought rather than mucking around with a 747...

OK well my wrist has stopped bleeding and I had a chance to do some researching, and found the fuel pump relay is in the fuse box by the MC, and the knock sensor is by the starter, no wonder I...

Today I scored my 95 harness and another 7427 computer, plus most of the sensors, and I have a few questions.It was a long day of trying to carefully pull out the harness, and by the time I was...

I decided to build a little adapter to allow me to read the EPROM while it is still mounted on the MEMCAL thus able to get a good BIN in case something goes south in the chip extraction. I can also...

I still am not sure what chip size it is but I was able to read it properly as a 27C512 and here it is. I'll let the more experienced folk check it out and confirm it's a good BIN file and I'll...

Thanks Dave!

I got the first EPROM out, the BJYL, started with that as there were lots of those, but only one of the BPRJ. I managed to extract it intact, guessing it's a 27C512??? All reference...

I was looking here... http://www.gearhead-efi.com/gearhead-efi/bin/

I will post them in the 7427 section as you mentioned. I just need to lift the lid and see what type of adapter I need to make,...

Will do. I looked in the archive and I didn't see either of these. I'll post them here and whoever knows how to get them to the archive can move them.

Cheers

Look what I found yesterday! The wrecker had over a dozen of these, had to decide which 2 I thought would be the best, this is the first standard BIN I have seen. I just need to find a complete...

Regarding the engine harness, are the Blue/Red connectors only available on the 94-95 trucks as well? If not, what years were the Red/Blue type connectors used and in what vehicles? Just trucks? Cars...