Eaton M90 on a fox?!?!

Gearbanger 101 said:

Because throughout the years, Ford used 3 different Generations of the M90 on their Thunderbirds and XR7's. Each had different shaped inlets, with different mounting points, which would require the need to fab up 3 different style inlets for the kits. Probably not all that cost efficient for mass production.

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There were three different generations but the housing and mounting does not change. I have a third gen with coated rotors and also a 1st gen with bare aluminum rotors. In 1989, 1990 the rotors were bare aluminum. In 1992 thru 1993 the rotors were gray epoxy coated. There were small changes between the generations and all fit universally. So if you get one from a T-bird then it will work. Just don't get one from a GM vehicle because of its akward size housing which makes it difficult to mount.

The main obstacles are as follows:

1. Buy a Ford M90.
2. Get a crank pulley and belt from a Vortech or Paxton that will have the standard six rib for the accessories and the eight rib for the blower. This is the best route but it is possible to run the blower off the six rib accessory belt.
3. Relocate the the alternator to the location of the smog pump.
4. Build a bracket for the supercharger to mount in the original location of the alternator. Install the belt and fabricate a tensioner on the slack side of the belt. A standard Ford tensioner will work.
5. Remove the EGR spacer and throttle body and buy some 3'' aluminum tubing and elbows and fabricate a tubing to the blower outlet to the upper intake inlet.
6. Mount a cone style filter in the fender, then mount the MAF, next mount the throttle body , and lastly fabricate a plenum to the supercharger inlet. The throttle body needs to be moved to the supercharger inlet and make an EGR block off plate at the upper intake. This also will require a longer throttle cable.
7. Make sure to mount a bypass valve between the inlet tubing and the outlet tubing. Magnuson makes a universal one or you could use the one on the T-bird with some fabricating. (https://home.comcast.net/~perkin50/09.jpg)
8. Buy a 255lph intank fuel pump.
9. Buy 42lb or 38lb injectors and matching MAF. Or buy 30 lb with an fmu if boost is limited to 6-8psi.
10. Enjoy the increased power that this roots style supercharger will give you.

This is alot cheaper than paying $1500-$2500 for a kit. You will need access to a welder that will weld aluminum (preferrably TIG). And access to a mill will be helpful.

Here are some pics of the actual BBK kit that use the Ford M90.

http://www.corral.net/photopost/showphoto.php?photo=13527&cat=638