[1984rampage]

My recently purchased 1966 mustang coupe with a 2 bbl 289 that puts out 200 hp is my car that i must restore. I have officially decided to convert the engine to the same thing as a 289 high performance engine, BUT I am not real big on a carburetors so I wish to convert it to EFI (electronic feul injection). The packages I have been looking at are the Electromotive TEC system, FAST EFI EZ EFI System, or the FORCE EFI System. Now which of these can you guys recommend or can you recomend others?

Thanks

[.boB]

EFI is complicated. Putting together a good package for performance use takes some carefull thought. It's certainly doable, and well worth the effort, IMO. But there is a learning curve. More so than a carb. It may take a while to figure it out. But when you do, it's a real joy to drive.

To plan your system, you need to break it down to about 3 differant systems. They all have to integrate well, but if you tackle each system one at a time, it will be a lot easier.

1. Intake. How do you want that to look? An 8 stack? Like a Carb? Like Webers? Or like a Fox Mustang? Rail injectors? Or central throttle body?

2. Fuel system. You'll need a high pressure system, with a return. This is not difficult to do. Lots of conversion parts available to make it easy. Just open up a couple of classic Mustang catalogs for some ideas.

Whenever possible, you should use AN lines and fittings. Not necessarily braided steel - that's expensive, heavy, and difficult to work with. But there are some excellent choices available for this. IMO, rubber lines and hose clamps is asking for trouble.

3. Electronics. Now, this is the meat of the EFI system. The correct choice here will make or break you.

I have a Haltech fuel only system. I would not recommend it. It's old technology, and isn't as efficient as the newer systems. But it is inexpensive and relativly easy to deal with.

The current leader of the pack seems to be BigStuff3. It's a crank triggered SEFI with dual wide band O2 sensors. You set the basic tune on a dyno, then the computer manages changes in parameters. It's very accurate. But expensive.

Redline is another good one. Better than Haltech, not as good as BigStuff3.

Some computers will also manage a distributerless ignition system, using coil packs or COP (coil on plug) set ups. This not only looks trick, but is extremly accurate and easy to tune.

Aftermarket systems generally use the same sensors that factory systems do - air temp, coolant temp, BAR, etc. I strongly suggest you spend the bux and get original factory parts. Many aftermarket kits (like BossEFI) have been a frustrating nightmare simply because of a bad $10 sensor.

If you want a system that's truly plug and play, take a close look at Mass-FloEFI. It uses all factory Ford electronic parts, including the computer. It is a true closed loop Mass Flow SEFI system. It's essentially the stock Ford system with a central throttle body that looks kinda like a carb. Ford spent millions to develope it, why not use it? This system has been on the market for a few years. It's track record is excellent for a simple, complete, quality product, and outstanding customer service.

http://i13.photobucket.com/albums/a2...dies2small.jpg

This is my system. Believe it or not, those tea strainer filters cost 100hp! I have a better set that only cost 40hp.

[Little Mule]

I own a 67 with a 289 and have upgraded the engine, not to HiPo standards but to my own preferences. I finished the mod with a Edelbrock 4bl Carb and I couldn't be happier with it. I got a lot of help from a new-found friend at a car store, but the carb even came with a dvd exlpaining how to adjust for what you want and what each adjustment accomplishes. It was simple to learn - just food for thought. I did keep my HP a little lower than I originally thought so that my foot would stay off the gas a little more and I could cruise rather than race (without the temptation). But it's still a massive difference from what it once was and I do enjoy having the potential for more if I so choose.

[silver69]

Just finshed a Mass flo on my 72 Mach 1 351-C full roller motor and my brothers and I did it in two days( abkout 12 hours) and on my bro's 69 convertible we went with a 92 5.0 and used a cobra upper package with GT40P heads. They both went well, we used an RJM technologies wiring harness on the 69 and it was easy but you should read up on all this stuff so you will know what is what. I would highly reccomend an AOD, AODE or 4R70W as well because these trannys will give you rear gear flexibility and highway cruising ability at the same time. read from www.baumannengineering.com, this will be very helpful for you I believe.
The mass flo was nice since nobody does Cleveland stuff(by the way its is really strong and runs like my 03 sierra) but the fuel system will be another $3-400 easy on ay thing you go with by the time its all said and done. Best of luck, message me if I can help in any way,
Joe