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  1. autopar3000

    Magnum and Wiring Swap

    I was asking about fuel pressure because I know those GM filter / regulators operate pretty high (58 psi?) and the OBD1 Magnum spec is 35 - 45 psi. I don't know if your higher fuel pressure would cause the low RPM stumbling issue, but it's something to consider. Maybe it's pushing fuel past...
  2. autopar3000

    Magnum and Wiring Swap

    Have you measured your fuel pressure at the rail?
  3. autopar3000

    Magnum and Wiring Swap

    Thanks! I'm pretty happy with how it came out. I got the buttons from here: Billet Automotive Buttons - Design your own custom billet buttons 12v I got these ones: 19mm 'CRUISE CONTROL SET' Billet Push Button Switches Car Universal This OD button: 19mm 'O/D' Billet Push Button Switch...
  4. autopar3000

    Magnum and Wiring Swap

    No problem, I did my first ever build thread for the cruise upgrade: Rewiring my EFI Magnum - 1970 Dart Swinger You might find I got a little side tracked and did several upgrades that weren't part of the original plan. If you're short on time most of the cruise control stuff is on page 2...
  5. autopar3000

    Magnum and Wiring Swap

    Seems like me and DionR are speaking the same language here :D
  6. autopar3000

    Magnum and Wiring Swap

    I don't often buy from forums or online groups for that very reason. When I do take that risk I use Paypal goods and services and pay the extra fee. So far I have been lucky and haven't been burned trying to buy Mopar parts or parts for my 85 Supra. Yet. I was asking because I didn't use a...
  7. autopar3000

    Magnum and Wiring Swap

    Hah hahaha.... that is pure awesomeness. And I thought I was fancy putting the Magnum cruise control setup on my car!
  8. autopar3000

    Magnum and Wiring Swap

    Question... you mentioned you're using the 904. Did you wire in a speed sensor?
  9. autopar3000

    Magnum and Wiring Swap

    Here's the easy button for a performance tune. Mopar Performance OBD1 PCM for the 5.9. Should work with the 5.2 just fine, maybe with a little extra fuel consumption. Mopar 90s HIGH PERFORMANCE computer#5249546 - auto parts - by owner - vehicle automotive sale - craigslist and Mopar...
  10. autopar3000

    Magnum and Wiring Swap

    +1 on 75slant6's comment. Watch out for Cherokees too, I think a lot of them had security. Maybe you could google the PCM part number and get some answers on what it came out of. If it turns out you do have a security PCM... well, before I make my next suggestion, let me say I hate Facebook...
  11. autopar3000

    Magnum and Wiring Swap

    Maybe it was this article you saw? Not exactly dyno testing, but from a flow perspective the Hughes is still way better than the kegger. Testing intake manifolds for the 5.2 / 5.9 Magnum V8 engines I saw that Engine Masters episode and was pretty impressed with the carb air gap. I think the...
  12. autopar3000

    Magnum and Wiring Swap

    Yeah, people want stupid money for those intakes, I got lucky and found my M1 relatively cheap ($750 CAD). I'm surprised the Hughes wasn't better, I have only heard good things about them. But I would say unless you can find an OBD1 Mopar Performance PCM or upgrade to OBD2 and get a custom...
  13. autopar3000

    Magnum and Wiring Swap

    I have the Mopar M1 intake, a 53 mm throttle body, long tube headers, and the Hughes SER0814ALN-14 cam. My cam has a little less duration than yours, a little more lift, with the same 114° LSA. My car runs fine on the stock 1994 PCM. Your extra duration might be bleeding off a little more...
  14. autopar3000

    Magnum and Wiring Swap

    That cam is on the ragged edge of what the stock tune can deal with. If everything else is set up perfectly then it *should* be OK, but any small thing out of spec can cause issues with the idle and running at low RPM - especially even the slightest vacuum leak. Obviously cap / rotor / plugs /...
  15. autopar3000

    Magnum and Wiring Swap

    Do you know what cam it is exactly? The stock tune will only tolerate so much duration / overlap before it starts to get confused. I'm not surprised to hear that. I had originally set up the fuel sync in my 5.9 using the method described in that youtube video. More recently I set the sync...
  16. autopar3000

    Flex plate for 5.9 and 904

    Yeah, 96 and up. When they switch to OBD2 and to the 46re they moved the weight from the converter to the flexplate.
  17. autopar3000

    Flex plate for 5.9 and 904

    When I was running a 904 I used the stock 5.9 flexplate from a 96 and later truck. One hole needs to be opened up maybe an eighth of an inch to allow it to mount to the 904 converter.
  18. autopar3000

    Magnum swap air cleaner

    I just used the 68 - 69 unsilenced air cleaner I had on my carbureted LA setup. I think I have a 3 inch air filter in there. The kegger intake is a lot taller than a carb intake, but the throttle body is very short so it kind of balances out. Not a great picture, but this is all I have right now.
  19. autopar3000

    Six years should be long enough...

    Your mention of the crank sensor reminded me that you can modify it to get a bit more timing. This idea going around the Ram and Dakota forums around 20 years ago: Your timing is set initially by the crankshaft sensor and the distributor has the camshaft sensor in it to determine when the...
  20. autopar3000

    Wiring harness progress

    That is awesome! If I didn't have a rallye dash I might have done the same thing. The 3.91 gear with the OD must be realy nice. I have a 5.9 running factory EFI with the 46rh with a 3.23 gear. The 3.23 is is nice on the highway but really the bare minimum for spirited acceleration. I'm just...
  21. autopar3000

    1972 Dart Magnum swap, R46RE Trans

    My 70 Dart has the 46RH with a 26 inch tire and a 3.23 gear. It cruises at 120 km/h at 2000, so 150 km/h would be about 2600 rpm. I might eventually switch to a 3.73, since the highway speed limits in Canada are usually 100 km/h, with very limited areas being 110. What gear do you have?
  22. autopar3000

    1972 Dart Magnum swap, R46RE Trans

    Ok, that's really the best way to do it in my opinion. The EFI is so nice in these cars, especially since in has OEM reliability and parts are so easy to get (in North America). I put a 1994 OBD1 Magnum setup in my car so I'm pretty knowledgeable about that. I know for OBD1 Mags you can just...
  23. autopar3000

    1972 Dart Magnum swap, R46RE Trans

    @Bobs Garage UG how are you going to control that transmission. Are you using the factory EFI and PCM?
  24. autopar3000

    what 5.9 magnum valve springs

    There aren't a ton of drop in options for the Mag. I have the Hughes springs that 318willrun mentioned with their SER0814ALN-14 cam. I have spun my engine past 6000 rpm and didn't feel any valve float.
  25. autopar3000

    94 5.2L Magnum running rough

    I have a 94 Magnum in my Dart, also running factory EFI. You might be on to something with that crank sensor for the issue of it just shutting down. For the rough running, you might just have a clogged injector. You can have them professionally cleaned, or you can get one of these things from...
  26. autopar3000

    Need some guidance on transmission/flexplate/torque convertor

    As someone who has done exactly what you're looking to do, I can tell you Professor Fate's comments are bang on. I would only add something to this: This is true for 5.9s from 1996 to 2003. From 1993 to 1995 they had a neutral flex plate and the weight on the torque converter. I suspect the...
  27. autopar3000

    Reground Cam

    He's probably talking about the cams from the later LA engines, which were roller cams. Cars like the Diplomat, Fifth Avenue, and Plymouth Caravelle.
  28. autopar3000

    flexplate ?

    Thanks, I'm looking at installing some underdrive pulleys so I'll probably have to get one of those PRW units. When I mentioned I couldn't get one without the pulley I really meant I couldn't get one locally, same day. The story on this is that I bought a new balancer (no integral pulley) and...
  29. autopar3000

    flexplate ?

    I used the ATP Z332. I was running the factory EFI with a 904 transmission. This flexplate has the proper weight required for the 5.9 Magnum, which is different than the 360 LA weight. My 5.9 originally came with the crank pulley bolted to the balancer, but it was bad and I ended up buying a...
  30. autopar3000

    RIP 340 Onto Magnum swap

    Mine did with 150k miles (240k km), but it was an ambulance that got fleet maintenance. On the other hand it probably spent a ton of time idling. It has the typical cylinder head cracks but that doesn't bother me one bit. I hear a lot about cracked Magnum heads and very little about those...
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