THE GM Tbi injectors , off the top of my head, have very low Impedance, like 1.2 Ohms. So driving 8 higher impedance injectors is no sweat.

SB is absolutely correct. The TBI injectors are 1.2 Ohms. I will switch to (8) high impedance EV1 style injectors that are about 12 Ohms.

I've been slowly but surely making some headway on the 575 injector plate. It's one of those after hours and weekend type things, so it's been slow going. It's coming right along though. Here are a few pics of what I have so far.
Eddie

One of the biggest pains was making the fuel rail mounts. After a bunch of head scratching, this is what I came up with.
Eddie

That looks cool Eddie

Thanks brother. It has been a tremendous amount of work. I don't even want to think about how much time I have invested in it so far. However, a lot of it has been thinking and figuring about how to do it. I wanted to keep it as simple, but more importantly, as short as possible. It will only raise the total height by .200". I know a bunch of the 575's are really close to the hatch, but most should have room for less than 1/4".

I already have a few changes to make to the next one. My goal is to get one final one made and then we can digitize it and spit them out on the CNC. Doing it by hand sux. There is no way that I can continue to make them by hand on a manuel mill.
Eddie

Yeah no doubt. By hand for all would certainly not be worth the effort to make it "economical" lol. Looks awesome though. Ill be looking into it if my next purchase has 575s.

Also as I'm trying to learn here Eddie can you post a pic of the stock set up and where the injectors are being moved from? I know your busy but if you get the opportunity that would be appreciated.

The stock setup is throttle body injected (TBI). It has 2 large injectors that sit in the top of each throttle body. There are a few issues with them. First, they sit in the throat of the throttle body disrupting air flow. They are fine for a stock 575, but if you are looking to make more power, they will hamper airflow. Secondly, they are not all that reliable or durable. They have a tendency to fail, drip and/or stick wide open. They are also getting harder and harder to find, since they are 100 lb/hr. My solution is to eliminate the weak link in the setup by replacing those injectors with cheap, easy to find and durable injectors. They will also have the added benefit of opening up the throat of the throttle body so that they can move more air.

I'm also working on a complete replacement. This will include an injector plate, 2 new throttle bodies, linkage, etc. However, it will add some height and quite a bit more money to it. It will let you make as much power as you want though. You would also be able to put it on any top entry supercharger. The one I'm making now is more of a replacement for the mediocre stock setup. I'm trying to keep the price and height down as much as I can.

If you look at this pic, the injectors sit on top of the throttle body. One has been removed so that you can see how much it opens things up.
Eddie

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