CCC Q jet to TBI questions

[samsterman99]

I'm lurking around in a new section of CK5 for the first time,
I just bought Stomis' TBI off his rig, and am going to install in after new years. I ordered my manifold adapter, fuel pump block off, and some lines that i needed to complete the install. I will be throwing in the tbi pump into my (carb) tank, and replacing all the rubber line with Fuel injection line.
Problem #1:
I have a large cap hei dizzy with the flat 4 wire connector going into it from the ecm. The harness i got has a very small 4 pin connector that hooks up directly to the 8 pin ignition module in the small cap dizzy. Can i still run my old distributor if I just splice the 4 wires together? or are these two totally different wiring schemes?

#2: I have to find a way to make 2 hookups. The "crank" signal, and the park/neutral switch. I was thinking of going to the starter solenoid to get the crank signal. Stomis had a manual, so i don't even know if his ecm has provisions for the park neutral switch.

#3: controlling my 700r4: I had the ccc q jet with the ecm and the controlled lockup. I was thinking of just putting an inline switch in the ground from the TCC solenoid to lock it on the highway and then unlock it on the trails. I don't want to mess with any more stuff than I have to at the moment, maybe later i will get a vacuum switch and all the fancy stuff.
Other than that, I have the VSS, grounds and power wires to hook up and I am good to go!
I'm sure I will be back when i want to start burning my own chips.

 

[sweetk30]

cant make sense of the post. please edit with more spaces / paragrahs.

makes it hard to read

i do see you will need a new tank with the baffle in it for the tbi pump to not suck dry .

 

[mudbuggy]

What year is the TBI from?

The fuel system runs to a max of 15psi unless you are going tpi or full bore fuel injection (70 psi)

I'm not sure about the cap, someone else will have to speak up about that equipment, might??

The crank signal if I remember correctly is read during running, don't think it can be read during start only ops, thinking you'lll have to install correct sensor.

700R4 only have the tv cable for engine monitioring, later model 4l60E, 4l80E, 6l80E have the electrical tcc controls.

 

[dave w]

I'm lurking around in a new section of CK5 for the first time, I just bought Stomis' TBI off his rig, and am going to install in after new years. I just ordered my manifold adapter, fuel pump block off, and some lines that i needed to complete the install. I will be throwing in the tbi pump into my tank, and replacing all the rubber line with FI line.
I have a large cap hei dizzy with the flat 4 wire connector going into it from the ecm to control the advance, but the harness i got has a very small 4 pin connector that hooks up directly to the 8 pin ignition module in the small cap dizzy. can i still run my old distributor if I just splice the 4 wires together? or are these two totally different wiring schemes?
Secondly, I have to find a way to make 2 hookups. The "crank" signal, and the park/neutral switch. I was thinking of going to the starter solenoid to get the crank signal. Stomis had a manual, so i don't even know if his ecm has provisions for the park neutral switch.
my last question is about controlling my 700r4, I had the ccc q jet with the ecm and the lockup. I was thinking of just putting an inline switch in the ground from the TCC solenoid to lock it on the highway and then unlock it on the trails. I don't want to mess with any more stuff than I have to at the moment, maybe later i will get a vacuum switch and all the fancy stuff.
Other than that, I have the VSS, grounds and power wires to hook up and I am good to go!
I'm sure I will be back when i want to start burning my own chips.

There are aftermarket Large Cap HEI Distributor to Small Cap HEI Distributor adapter cables. http://www.nookandtranny.com/mm5/me...ode=WIR-FBP8586DADAPT&Category_Code=HARNESSES

To eliminate the VSS, the low cost option is to wire the Park / Neutral Switch to battery NEGATIVE, which tells the computer the vehicle is in park or neutral.

Using a VSS allows the ECM to control the TCC.

To keep things simple, using an adjustable TCC vacuum switch from Superior part# K058 works great. http://www.superiortransmission.com/Product_Page.cfm?ID=186

Crank signal from the stater solenoid is a good way to connect "Crank Signal" to the ECM.

dave w

 

[eagle mark]

Here's the wiring for that distributor you have:

Pretty sure you can also wire in the 700r4 to the 1227747 ECM, but you need a auto chip for it to work, don't think a manual chip has those commands.

Just take your time and use the wires going to CCC/QJ ecm and pin them into the TBI ECM, you already have VSS and 700r4 wiring there, may also have a crank wire there? If not it is a simple one wire that senses power when starter is engaged.

Been a long time since I have converted a CCC QJ to TBI, I don't rmember if it has a DRAC/VSSB, or crank wire, but it is fairly easy because some stuff is already there, just use it.

Here's a link to all wiring diagrams for the 1227747 ECM:
http://www.gearhead-efi.com/Fuel-Injection/showthread.php?304-1227747-ECM-Information-42

When you do this I would be curioius as to what a factory manual EFI truck has wired into Park/Neutral ECM wires?

Now your in CA so I doubt you'll pass emmisions inspection even though you'll be running cleaner. You'll have to go through referee and pass as an engine swap from 1987 chevy truck, so don't forget wires from Charcoal canister , airpump etc...

 

[samsterman99]

There are aftermarket Large Cap HEI Distributor to Small Cap HEI Distributor adapter cables. http://www.nookandtranny.com/mm5/me...ode=WIR-FBP8586DADAPT&Category_Code=HARNESSES

To eliminate the VSS, the low cost option is to wire the Park / Neutral Switch to battery NEGATIVE, which tells the computer the vehicle is in park or neutral.

Using a VSS allows the ECM to control the TCC.

To keep things simple, using an adjustable TCC vacuum switch from Superior part# K058 works great. http://www.superiortransmission.com/Product_Page.cfm?ID=186

Crank signal from the stater solenoid is a good way to connect "Crank Signal" to the ECM.

dave w

I would need the polar opposite of that adapter, since i am going from the 87+ wiring, to the old distributor.... but at least i know it can be done so i will just make my own.
I have the VSS already, so i will just use that. the ECM has the output for a "shift light/TCC lockup" wire, so i assume depending on the burn on the chip, it will serve two different functions?
is the park/neutral switch any way related to the VSS?
thank you for the link to the vacuum switch. The EFI is from a 87 truck, 7747 ecm.

 

[dave w]

I would need the polar opposite of that adapter, since i am going from the 87+ wiring, to the old distributor.... but at least i know it can be done so i will just make my own.
I have the VSS already, so i will just use that. the ECM has the output for a "shift light/TCC lockup" wire, so i assume depending on the burn on the chip, it will serve two different functions?
is the park/neutral switch any way related to the VSS?
thank you for the link to the vacuum switch. The EFI is from a 87 truck, 7747 ecm.

I think a connector like the one from EFI Connections could be installed in the harness you have and be able to work. http://www.eficonnection.com/eficonnection/ItemDetails.aspx?ItemId=550 Maybe your local parts store can get the individual Weather Pack connector parts you need. I'm thinking a local auto salvage yard might have a donor vehicle that has the connector you need?

A chip burned with the TCC parameters is required to make the TCC work. If you need a chip burned, send me a PM, I have the equipment and software to burn chips.

The park / neutral switch sends a ground signal to the ECM when the truck is in either park or neutral. I'm not sure of everything the ECM will or will not do if the park / neutral is always "ground" or always "not ground". I think the best option (and is likely going save some headaches) is use the VSS your truck already has and make sure the park / neutral switch wired correctly.

Basically, with the park / neutral switch always sending "ground" to the ECM allows the ECM to operate the TBI system without a VSS. Basically the VSS is needed by the ECM to tell the TCC when to "lock" or "unlock".

dave w

 

[samsterman99]

I think a connector like the one from EFI Connections could be installed in the harness you have and be able to work. http://www.eficonnection.com/eficonnection/ItemDetails.aspx?ItemId=550 Maybe your local parts store can get the individual Weather Pack connector parts you need. I'm thinking a local auto salvage yard might have a donor vehicle that has the connector you need?

A chip burned with the TCC parameters is required to make the TCC work. If you need a chip burned, send me a PM, I have the equipment and software to burn chips.

The park / neutral switch sends a ground signal to the ECM when the truck is in either park or neutral. I'm not sure of everything the ECM will or will not do if the park / neutral is always "ground" or always "not ground". I think the best option (and is likely going save some headaches) is use the VSS your truck already has and make sure the park / neutral switch wired correctly.

Basically, with the park / neutral switch always sending "ground" to the ECM allows the ECM to operate the TBI system without a VSS. Basically the VSS is needed by the ECM to tell the TCC when to "lock" or "unlock".

dave w

Yeah I am going to make the run down to the local pull a part and see if I can find a few items I need to throw into the build.
I appreciate the offer on burning a chip, I will hit you up in the near future as soon as i get this thing to crank over. I may also have the ESC sensor and the EGR removed just for ease of use. Cali emissions shouldn't be an issue when I register this in Arizona in a year.
Thanks for all the help everyone!