TBI conversion on a Ford 400 - need help getting it to run

[Six_Shooter]

Wait, how did you get this impression? :) Of course I didn't! It is - not ideally, I know - taped to the rear side of the driver's side fender for now. I'll rip the interior out for a rustproofing effort in a few weeks time and will move the ECM below the front bench then.

From this:

Hi guys,
complete and total newbie here. I am trying to get a homebrew GM TBI setup running on my Ford 400 and it seems like I hit a wall by now. I really appreciate some help from you guys.

So, what has been done so far?
-I got a TBI system from a 1990 5.7 K-Series truck (7747 ECM).
-Mounted it on the engine's Edelbrock Performer intake

So then what is mounted on the intake?

Also, move it inside the vehicle, the same things I mentioned earlier still apply, just being mounted under the hood. Also remember to isolate the ECM case from teh chassis ground. Grounding the ECM case to chassis ground has been known to cause ground loops and introduce noise at best, and damage ECMs at worst.

I'll keep an eye on that, thank you for the heads-up! Right now, my problem seems to be too many triggers, not too few, but it's good to know.

The poor triggering of reluctor doesn't mean just too few, it means poor triggering, which can include too many, due to collapsing magnetic fields.

But...

They aren't. I guess that's where my problems come from. I'll switch to shielded twisted cables on Tuesday and report back.

This is where I would start, twist those wires and the triggering caused by the spark plug wires should go away.

Also in the end using a VSS, will help with stable idle and keep the engine from stalling when coming to a stop, among other benefits.