The 4.6L DOHC 2V engines used for these builds started out life in '01 Mustangs. The 4.6L engines on their own are not very powerful compared to today's standards, so an aftermarket Roush supercharger kit wil be used to bump up power output. The engine specifications are listed here:

Mock Motor

Due to the single overhead cam configuration, the modular motor is much larger than a small block ford. To make sure we had adequate clearances, we wanted to build a mock-up engine to make pulling this motor in and out a little easier. After taking careful measurements of the block, we created a CAD model which enabled us to create 1:1 prints. The prints were then pinned to 3/4 plywood, cut on bandsaw, and nailed together. We were then able to bolt up the engine mounts, exhaust manifolds, cam covers, front cover, upper intake manifold, manifolds, A/C compressor and power steering pump.

The transmission was bolted up and was installed in the car. The engine was then placed in the car to check clearances. Remarkably everything fit quite well. The cam covers had very little clearance to the shock spring towers, but this wasn't an issue since they were going to be cut out for the narrower SN95 shock towers.

4/28/09: Finally time to start working on the fun part of this project - the powertrain. The engines will just get a refreshing/upgrade and make sure everything is OK inside. After all, they are only 5 years old.

One of the engines we bought came from a car that was a write-off and have some issues with the front cover being cracked as you can see. We took a risk on this (since we only have pics to go by) and hoped that there was no internal damage from the timing chain coming off. Sure enough when we pulled the head off, all was well inside. Gotta love the 4 valve heads.

10/31/08:  Finally after waiting a couple of years to find the right engine for the right price, we worked out a deal for one listed on Ebay.  This has lots of extra parts which can be sold off to pay for the engine.  Engine is an all aluminum 2004 Mach 1 4.6L 4V engine.  Only problem was it was in a front collision and will need some attention in the area of the front cover, but that will hopefully be minor.  The block and heads look fine.

6/3/10: Figued we may as well try throwing one of the engines in to see how everything fits while we are at it. Everything fits surprisingly well. Just need to establish where to drill holes in the relocated motor mounts to get the engine as far back as possible. Big thing is the supercharger clears the hood with lots of room to spare. May not end up running the hood scoop in the to keep the stealth theme going.

8/4/09: Slight change in powertrain plans here.. have had one of these engines for a while now, and recently found a second one (both used of course). Could not pass up the deal on them. They are 4.6L 2V engines that use an Eaton M90 supercharger and were designed for use in a 2001-2004 Roush Stage 3 Mustang. Both setups are missing some parts and will require some custom fab to make fit.. but nothing too major. Should be good for over 400hp/400ftlb of torque and will still get great gas mileage (when not under boost at least). The rest of the powertrain is good for 500ish hp so we should be OK there. Two main concerns with this were hood clearance and alternator clearance to framerail. After mocking things up both seem within reason, so I think we are going ahead with it. They will add a bit of weight to the car which is not overly desirable.. but what can you do. The Mach motors will go on the shelf until the next project I guess. I'll let the pictures tell the rest of the story...

2/16/09: Starting to order up some of the parts required to rebuild the engine (or at least check it out) and then add part like oil pans that are spefically for road racing. We decided to get a Moroso pan that is specifically designed for use during on track events and has seprate trap doors to keep the sloshing to a minimum.

1/5/09: Once the front shock towers were removed and the stock Mustang front suspension k-member was modified, the engine was placed in the car. Surprisingly, the engine and exhaust fit quite well, and should only require a few tweaks to make it work. This is a big relief as we had thought it was going to be necessary to widen the frame rails. Things are really starting to move along now!

03/16/07:  First major break in the builds - a  2004 Mach 1 Engine - 4.6L 4V Engine.  Needs some refreshing aesthetically, but it is the perfect candidate for our cars, and the price was right.  This was out of a wrecked car and had sat for a while, hence the corroded surfaces.  As you can see, this engine is complete with wiring, computer, harnesses etc.  The Tremec 3650 5-speed that comes stock on a Mach 1 will be replaced in favor of the T56 6-speed.  Now this has us thinking about a shaker hood..