Originally posted by efi-diy:
Originally posted by neonova75:
how do you go about setting up a 75 inline 250 to fuel injected?
To start look at the pix. listed in the first post above. I used a Holley TBI instead of a GM one but the idea is the same.
Then vist a local U pull it junk yard and look at a '88 to 92 GM truck how the TBI is installed and how the fuel system works. There are 2 fuel lines - supply and return. Big one is the supply - small is the return.
So bascially you bolt the TBI to the Holley adatper plate which in turn is bolted to a 4bbl intake mainifold installed on the engine. Hookup the throttle linkage (cable types work best).
You then install the supply and return line to the fuel tank along with the TBI electric fuel pump.
Then you install the harness from the donor vehicle and the ECM. Wire in the harness ( yes you will need the a wiring diagram from the donor vehicle) to your existing harness at the ign switch and main power feeds using fuses where needed to duplicate the ones from the donor vehicle.
Hope this gets you pointed in the right direction. well for now i'm stickin with my carb (tryin to find a 2bbl) but i may try out fuel injected after the rebuild, maybe even incorporate it with the adding of a turbo. i wish there was someone around that had a straight six shop that i could watch some work get done, i'm more of the hands on type (go figure).
So basically to go efi i need a donor late 80's earli 90's GM and run supply, return and install ecu? Would this application interfere with adding a Dakota Digital Dash?
