In another thread, WKDFIRO mentioned seeing a Duke with a multiport-type fuel injection system. He said it was years ago, has anyone else seen this? Or have any idea where to start on a system of this type? I'm laid off right now, so I'm just dreaming, but I like to flesh out my dreams, at least on paper. TIA

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85 2M4(Lil' Bit)

how about a mpi system from a sunfire that has a 2.4L in it,plus add modifications to the intake manifold.

Sounds like a place to start! What years, I might get the book and look into it.

You would need the entire electrical package.

you would need a way to mount the injectors. There are a few ways you could do that.

you will probably need a bunch of things fabricated no matter how you do it.

you'll very likely need to reprogram the ECM so it doesn't risk runing lean, and to probably correct some timing. This would be the hardest part. You'll need access to a dyno to get it right.

Yeah, I know it would be a big job, that's why it will probably remain theoretical. But I feel that discussing these typrs of things help to keep our cars vital and up-to-date.

There was a fuel injection set-up for the 16 valve super duty 2.5L 4 cylinder.

I know that you could find this stuff, but it would be very expensive. For example, used super duty engines start at about $4K. A 16 vavle super duty would be a lot more.

Then, there's the smog issues. In California, they frown on modifications to the fuel and emissions systems. It might be hard to convince a DMV referee to cerify a car with modified fuel injection and engine management.

If you want to build a nice Iron Duke, then remember this: all of the stock Fiero dukes are at least 13 years old. A thorough eninge rebuild with 3 angle vavle job, mild cam, and a hooker header will make a huge difference.

It will be hard work, but it is much easier and far less expensive than swapping a V6 into an '84 Fiero.

If you do a good job and don't get carried away with the modifications, the engine you build will last for years.

People may trash the Iron Duke on this Forum from time to time, but I think these engines have proven themselves over the year.

I had a 1984 Olds Cutlass Ciera with the Iron Duke in it, and I could not kill it. I floored it all the time. I never let it warm up. It just kept running beautifully. And, in the Ciera it got 25 MPG no matter how hard you drove the car.

From 1978 to 1992, the Iron Duke was the most commonly installed engine in GM vehicles. It's a pushrod dinosaur, but it's also a real Pontiac engine.

Today, a fresh Iron Duke is not so common. There are many people on this Forum that have more than 200,000 miles on their Dukes (even Marilyn Manson!).