How to make a long story short - not. My 87 351W needed a little help which gave me the opportunity to think about options. Dangerous territory! I found a loner 94 van and stripped the brain, harness, top end, front end etc. The plan was go with stock speed density and convert later to mass flow. I let myself be talked into the Pro-Jection 20S instead. "You won't like that old speed density, go with the Pro-Jection"

Got Dart Iron Eagle heads, Edelbrock Performer dual plane, MSD 6, and the Holley. Almost four weeks later and the Holley still isn't right. The local shop had problems with tpi and we decided to take it to a speed shop in Tucson that is the Holley distributor. Replaced the tpi sensor, replaced the ECU, now just a different problem with going lean at about 2500 RPM and then fine at higher RPM. Holley tech support was on the line many times with no resolve.

Naturally, I bought the unit from Summit Racing so I have to send parts back and forth with them as Holley will not let the distrubtor address warranty unless it was bought at that location.

The speed shop decided that they could not work on it for another week or two to keep up with other commitments. Great, I guess I don't rate. My reaction was to say to get my Bronco out of that shop. It comes back to the local shop today for a couple of other checks. They want to hook a scope up and see what the mag pickup signal looks like. Must have been beyond the speed shop.

I had a rebuild kit sitting on the shelf for the 80457S carb so I rebuilt it last night in preparation of removing the Pro-Jection and putting the carb back on with a bypass fuel regulator. Holley and the local distrubutor have been next to useless. The local shop has done well.

Summit has been great. They will actually take all of the Holley crap back and just subtact the difference on me keeping the fuel pump.

I have a buch of parts off a 94 351 van - PM me if interested. Also have some stuff from my 87 like the heads and intake manifold.

Suggestions are welcome. I will post again where I end up but right now, Holley is a four letter word.

 

Quick update for those who might be interested. The Pro-Jection is boxed up for return. So much for that effort. I am back to the carb.

The Dart heads with the Edelbrock Performer intake manifold make a world of difference. The 351 really benefited by allowing it to breath better. Fun!

 

It's hard doing a project of this magnitude without knowing anyone else with that experience under their belt. That is one of the great things about this list. While your experience was negative, it will be a huge advantage to others.


Thank you.

Bob

 

I had asked Summit if they could check for other returns on the ProJection. They can and the answer was that there were not a lot of returns for the 20S but there were a few. Summit has been good to deal with. I would suggest that anyone contemplating something similar to give tech support a call and ask them if they have seen a lot or steady stream of returns. I was surprised that there were as many returns as suggested for a systems that has been out as long as this one has.

Well heck - some of this event was negative and some was good. I should have..........checked further.

 

I notice that system is only rated for up to 275hp. That's probabaly responsible for at least some of the problems you are having.. the motor you have should be in the 350HP range with a half decent cam. I have a friend with the Commander 950 Milti-point system on a Chrysler 360 and it runs awesome... even with the vintage Paxton blower he just added.

 

Not very likely as there was no cam change and as stated before, it was having problems at the low RPM. Even with the head change, I would be lucky to be making 260HP since the starting point is about 220HP. We expect that there was either an injector problem or the replacement ECU was also bad.

I carry a spare alternator, starter, fuel pump, ignition box, igntion wires, coil, cap/rotor, and belts when off to the boonies for hunting and off-roading. We were looking at the third new ECU to make this work. No way I would have any confidence that this unit could be repaired in the field so off it came.

Big difference in price between those two systems. The advantage of the 950 series is that you can hook a computer to it.

 

Agreed.. there is no confidence in an efi system that doesn't work as well as a carb. In this case the stock SD system would have worked much better, it'll support up to about 300hp and it's unlikely you would exceed that with the stock cam.

 

that 87 was carb originally correct?

if you plan on going efi start with mass air from a mustang for instance. check out Ford Fuel Injection to build the harness or buy one thru that site.

 

Take a look at this site: http://www.massfloefi.com/ an alternative. Their system is not cheap but I installed one on my 77 400 motor and it was definitely a plug and play system. The first time I started the engine I had left out a plug on the back of manifold (about 1" dia.) and the engine fired right up. Try that with a carb. Take a look in my gallery for pics.