Hello.. would you have the summit carb #. I'm needing electric choke with kick down provisions for the c6
Thanks
Brent

 

I've seen that twice on friends vehicles. Never could get them to run well with the dual planes. We swapped in Victor Jr single planes, and that fixed it.. I haven't heard anyone give a definitive explanation, but it does seem to be true.

 

thanks I've read that as well. But did have good luch with the dual plane and open spacer until now. Not it has a dirty tach signal and just runs poorly and around 11afr

 

Here it is https://www.summitracing.com/parts/s...hoCkqEQAvD_BwE
I just bought two more for future builds because they are on sale right now. It has the Ford kick down already on it.

 

Latest update from fitech.. they are telling me a duraspark II ignition is not compatible with their system. Too much RF interference. Isn't the magnetic pick up in a duraspark the same as an msd?
I haven't ripped it off the truck yet but I feel it coming lol.

 

Thanks gashog

 

I'd go with one of those eBay HEI distributors, but I'm the guy that put a full Sniper/Hyperspark setup on a field find truck that fed many generations of mice with my wiring harness. I know any TBI unit can be extremely sensitive to RF from the ignition system, the Holley included.

 

Typical of them, blame everything else. The duraspark is very much compatible. The module is also solid state and there isn't much RF coming off of it. We're you using the timing control feature of the FiTech?

 

Hello.. no timing control. Go street 400 basic unit

 

Just another useless update..after chasing my tail for days put it all back together for now...runs best with my 40year old ignition coil... wtf

 

where is your coil mounted, and in what position?
The old Ford coils were said to be among the best, if not the best available at the time. They also were able to lay over on their sides too, which is generally considered a no-no with oil-filled coils. And why most of the other OE's mounted theirs upright, and most manufacturers say to specifically mount their coils upright.
This keeps the cooling oil covering more of the windings so you don't get overheating. I wonder if it also reduces RF emanating from the coil? Maybe if you have an ignition coil lying on it's side and mounted close to the TBI perhaps it's what's causing some trouble.

I'd have to agree about the Dura Spark. Not only is the solid-state module not likely to put out much noise (although with Chinese production bits, maybe there is something to that?) but the module is remotely located to boot! Where is yours? Over on a fender somewhere, well away from the TBI?
As far as the distributor is concerned, yes it's the very same trigger mechanism that almost all the aftermarket companies are using now. I would not be surprised to see it under the lid of some of the HEI systems as well. While the original GM HEI used it's own triggering mechanism, the old Ford setup has found it's way into tons of distributors from MSD, Pertronix (when they're not using their own modules) and some others I've seen.

And when FiTech or Holley falls back on the old "it needs a 2-wire distributor and not a 3-wire distributor" then just tell them that the third wire on a Ford distributor is just a supplementary ground!
If you want to make it TBI compatible, then according to them you just need to remove a ground wire. Which seems counter-intuitive given all that we know about missing ground wires!

At least one member of another Bronco site I'm on is running his Sniper, or maybe it's a FiTech with Dura Spark and using full timing control I think.
Pretty sure it's the same guy that was an early adopter of the progressive linkage option on the Sniper. He found the stock linkage that opens all 4 butterflies at the same time was just to sensitive and finicky. But he loves his new setup with progressive linkage like a standard 4bbl carb.
I wonder why they don't just make it standard and leave the all-at-once linkage for the racers like we used to do in the sixties. Street was progressive, racing was all four at the same time.

Paul

 

Thanks for the info. Coil is at stock location. I may move it and source my tach wire from the drivers fender instead of the coil.
Brent

 

My Fitech runs like a raped ape on my warmed up 460, Edelbrock performer intake no spacer or ground down divider. Only issue I've had was getting the idle air set right for the 460, fires up and idles good now. Been trouble free about two and a half years now.

Jess

 

That's good to hear. I got about 3 years from my first one. It then developed uncontrollable idle issues. Replaced it and the second unit lasted 4 months. Went from a bad tach signal to no tach signal. Turned my truck into a rather large Christmas ornament. It's coming off. I cant trust it any more. I'm going back to my carburetor.

 

Well it's been a couple of weeks now..fitech has finally agreed with me that I have a bad ecu. Finally got the 2bbl adapter and it's getting carbed this weekend. Can anyone confirm the thermostatic choke spring was ac voltage from the alternator correct? I removed that wiring when I did the 3g upgrade. I assume I can wire it to the 3g?
thanks
Brent