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  1. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    Now to get a cold air intake working. Pulled the throttle body off and gave it a clean while it was out. Found a plumbing coupler. Fits on throttle body and is made of some kind of rubbery plastic. Drilled a 1/2" hole in it for the 9/16" diameter air intake temperature sensor. Jammed it in...
  2. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    This is the early hemi accelerator pedal position sensor box. I used this because the A518 transmission needs a throttle position signal through its TV (throttle valve) cable. It does the same thing as the old kickdown rods. I added the box at the left side to bring the TV cable in opposite...
  3. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    Two photos of the key at RUN + bus.
  4. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    All the switches in place and dash back to semi normal. Fuses and relays tucked in box. Old school voltage regulator is for second alternator feeding house battery. The VR is adjustable and will get bolted up once I get the engine running and set the voltage through a pot in the back of the...
  5. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    I super glued the fuse holders to their respective relays. Also soldered the relays output wires directly to its matching pin in the fuse holder thereby eliminating 4 joints in the wiring. And making the whole thing a bit more compact.
  6. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    Gave up trying to use the aftermarket relay box. Too confusing. Now 4 separate water proof relays and 5 water proof fuse holders.
  7. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    The 7 holes in the hood latch support represent 5% of the exposed rad face. Every bit helps. Testing the instrument lights circuit for the new push button start. Still needs the key, but this button runs the starter through the PCM. More of that roll of steel strap. This time as mounts for...
  8. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    Using 3 kinds of switches. The PCM harness needs a push button to activate the starter. You'll put the key to run and then push a start button to crank it over. The fuel sender in the small Nissan Micra tank can be selected to display on the factory fuel gauge through a splice made on plug...
  9. Pntyrmvr

    New Conversion Question

    Welcome. There are few rules and fewer hints on how to go about a conversion. I suggest you try uTube searches and go from there. Read a few of the builds here of course, but this place is pretty quiet.
  10. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    Winner, winner, steak and potato dinner.
  11. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    PCM, fuses, and relays will all hide under the passenger seat. Wiring loom will run left of wheel well in low spot that I'll level with top of wheel well to give passenger flat floor and protect loom. Yup, push button start.
  12. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    Extended accelerator pedal sensor box to add cable going to A518. Side shot of factory pedal meeting 2004 accelerator cable in box at firewall. Rad hose adapters. Radiator hoses old meets new. 2100 cfm cooling fan shrouded to 1979 radiator shroud with sheet of steel. Gauges will show oil...
  13. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    Filled rad flushed with fresh water for a day with citric acid overnight. Shouldn't get any more crud out right? Hah. Radiator inlet has to move to driver's side. Yup you can buy that. And adapters to get the old and new hoses to match up. Sadly I forgot the lower hose adapter so I had to...
  14. Pntyrmvr

    16' Reefer box as starting point?

    Google heat recovery unit.
  15. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    Swapped one idler for smaller one. Tensioner now right in middle of its range. Put together relay box. Relays to: Provide power to overdrive and converter lockup plug on A518 OD transmission. Hook second alternator up to house battery voltage regulator only when key is on. Prevent...
  16. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    Modern starter needs some love to get it to sit flush against bellhousing face
  17. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    Fuel system with added 10 gallon tank all plumbed in. Vent tees into main 50 gal tank vent and is collected in charcoal cannister. Rebuilt both alternators including analog driver for house battery system so 175Ah gets the right voltage through an adjustable regulator. PCM will run engine...
  18. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    No more hot right foot. Put new factory heat shields on the manifolds. 31% less revolutions at speed, better fuel efficiency, and both old and new shields should keep temperatures much lower in the cab.
  19. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    OEM hose loops but fits. First hack at a custom transmission dipstick tube. Cut down factory heat shield. Curb side fits as is. Also cut factory muffler heat shield down to size.
  20. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    Shortened front driveshaft 14" and modified hanger bearing mount to shift it 3/4" towards curb side. Added 6" to curb side exhaust pipe to get catalytic converter away from transmission. Had to trim flared end of extension pipe to ensure a good seal. Modern manifold flanges are much more...
  21. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    Pulled the overdrive crossmember out of a 1992 B250 conversion van. Cut out the original one in the 1979 and welded in the 1992 piece. The new unit has a beefy steel inner bracket 19" wide hidden beneath the stamped outer sheet metal. It also is shorter allowing the overdrive transmission...
  22. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    Finally got down to the nitty gritty. 440 out 5.7 oil filter hits passenger engine mount cut mount and move back 2-1/4" tacked brackets together
  23. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    Newer pedal sensor installed and adjusted has the throttle blade moving in sync. Put a 10 gallon Nissan Versa tank in behind factory tank with new TI pump in it. Will use click clack pump to fill it from main tank. I'll add a separate filler pipe later. This way I get no fuel starvation to...
  24. Pntyrmvr

    1979 Dodge MB400 cube van conversion

    Bolted the engine up to the transmission that came with it. Original starter was dust. Bought used replacement. Factory fuel pump worked after a few snacks. Wired up to battery and got it running. Pedal position sensor is not telling PCM anything but the engine runs on the standalone...

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