360 magnum
Thanks. I wish i would have got the 518. It looked so big that i thought it
would take a lot of floor cutting. It is 300 miles away so i guess i will use my 904. I don't have air or power steering so i am going to keep as simple as i can. I will use a electric fuel pump. I have all the uncut wires and the computer.
For the transmission, if you can find an 899 (904 w/ lock up converter) you can net mileage gains with that and there aren't any trans tunnel mods needed as far as I know. You can engage/disengage the lockup with pressure switches.
If you decide to keep the FI and have any questions feel free to ask. I've done two of these swaps in my '74 duster.
The first was a '94 engine that from the factory has a 727 behind it. That engine ultimately got twin turbos also.
The second was a '97 engine with a 44RE (same as an A500), turbos are almost done on this one.
My first combo I averaged with the turbos 16/20 mpg, doing 19/23 now. The wiring isn't very hard and I've recently posted up some diagrams in the "small block tech" section to help anyone doing this swap.
1.For my swaps I got rid of the PDC (power distribution center) and wired in 2 relays (ASD, Fuel Pump). Those are the only relays needed to run the engine.
2.You'll need to supply a constant and a keyed on power source to the ECM and hook up all of your grounds.
3. The computer needs a VSS(vehicle speed sensor) input. I used a speedo gear assembly out of a late 80s dodge truck. The have both a 2 prong connector and a cable driven output (so you can use the factory speedo)
4. You'll need either an inline/intank high pressure fuel pump. I mounted my pump and regulator on the pass frame rail so my return line is short and plums into the vent tube on the factory sending unit.
5. Then you just have to clean up the un-needed wires.
