This is my first post on here! New to the forums! Just got my first Mustang
Its a 2004 3.9 V6, 4r70w transmission, 7.5 rear, Mach 460 sound system and it a 40th Anniversary edition. All black leather seats. Love this car. Its mostly stock. I recently replaced both front hub assemblies, rotors, pads. New u-joints a new set of tires. Just got a double din Pioneer FH-X721BT radio. Just waiting for the install kit to arrive. Already have all the wiring figured out. Here is what my plans are. Also have a few questions. I recently rebuilt a 302/5.0L engine for my 89 Bronco. Bored 30 over, forged pistons, planed the block, turned the crank, new cam, all new bearings, a basic rebuild. Nice engine. The machine shop put the rebuild kit together and I assembled it. They did all the machine work. Anyway I am wanting to swap this into the Mustang. I have other plans for the Bronco. Here is what I know I will need.
94-95 K-member and motor mounts.
94-95 gt compete wire harness including the gauge cluster and computer.
94-95 gt Upper and lower intake plenum (Factory or Aftermarket) with fuel rail and injectors.
94-95 gt MAF sensor
94-95 gt CAI
94-95 gt Throttle Body
Coil and Wires
New headers and exhaust system.
What I am not sure about.
Would the fuel lines from my 3.9 line up and connect with the 94-95 fuel rails?
Would my stock 3.9 fuel sending assembly, high pressure pump and regulator work and feed enough pressure to my 5.0L and not starve it of fuel?
Could a tune help out with is?. I don't mind replacing all of these components with new upgrades. Just curious.
I also am not sure about the accessory brackets for the front of the motor? I'm pretty sure I will have to get those off of the 94-95 donor gt.
Here is another lengthy question I have/ possible answer pertaining to the 4R70W year difference speedo gear issue.
I plan on using my 4R70W transmission. Since I have the 3.9L/3.8L v6. The bell housing should bolt right up to the 5.0L and they also use the same 2 bolt or 3 bolt starter locations (cant remember off the top of my head) . Since its already in the car its one less thing for me to have to buy. Also from what I hear its quite sought after in the 5.0L performance world (from what I have read). So I'm keeping it. Since its an 04 I believe its the most upgraded one that came from the factory also ( don't quote me hear lol) in strength and durability. Anyway with it being newer than 02 or 03 I believe it does not use the mechanical speedometer gear to talk to the computer unlike 02 and older which do. They had a change from being gear driven to some other type of method of reading that info. I don't know what that is. Since I'm going to be using a 94-95 wire harness and computer. I'm going to need to find a donor car thats a 94-95 that has a 5.0L/AODE/4R70W. Take that harness and all the sensors off of that transmission and swap them to my 04 trans. Also take the output shaft from that (donor 94-95) transmission that has the gears machined onto it to work with speedo gears unlike the 03 and newer 4R70W's. Should be a direct replacement. If your still following me I really appreciate it! I will also take the output housing off of the donor car since it has the threaded whole for the speedsensor in it and install that onto my 2004 4R70W. I then should be able to connect that sensor to the wiring harness and the computer should tell the gauge cluster what it needs to know. I have also read that the sensors on the 94-95 AODE transmissions can be swapped onto the 4R70W since they are almost identical. I'm doing this so it will work with the older 94-95 harness I am swapping over. I also want to get an 8.8 out of a 99-04 GT and overhaul it plus install new gears. I'm sure I'm leaving some things out but this is what I have found so far. If you have any answers or advice that would be great. I know that most are going to say just by a 4.6 gt and call it done. Thats not what i'm wanting to do. I want a 5.0L new edge Mustang. I want something different and unique. I plan on over time collecting and purchasing all the parts and then doing the swap. I am very mechanically inclined. I work on all my own stuff. Thanks for any advice or answers. I caught the bug. These cars are so much fun!