Motor Swap 1975 W100
Thanks man. I appreciate it. I think I need to get the right motor mounts that bolt on the side of the block. If you know of where I can get some used please let me know. Bouchillons wants 70 bucks a piece for them, and I'll just weld and drill the ones I have for that much money. I think theres some on ebay for a 1972 truck, which I think is the same. There at 25 bucks right now so I'm lookin at those, but the faster and cheaper the better. Once I get the truck running ill post some pictures.
Zach
Zach
Hey guys,
I am having some electrical issues with the electronic ignition on my 1975 dodge w100. It had a fuel injected 318 that someone put in it, but it was blown up. So I bought a Mopar 400 that was in a dodge pickup and dropped it in my 75. I wanted to use the electronic ignition which uses the 5 wire ECU and the dual ballast resistor. I wired up the ignition the way that the diagram I had showed, but when i try to start the truck theres only 9 volts at the coil. When its in the run position theres only 3 volts.
Could anyone tell me what the resistances on the ballast resistor are supossed to be?
Also, why did dodge install the dual ballast resistors on the electronic ignition models, i thought they were for points only so you don't burn them up when the truck is running.
Also if anyone knows how I should wire up the alternator and voltage regulator that would help me out alot too.
Any and all information will be helpful.
Thanks Guys.
Zach
I am having some electrical issues with the electronic ignition on my 1975 dodge w100. It had a fuel injected 318 that someone put in it, but it was blown up. So I bought a Mopar 400 that was in a dodge pickup and dropped it in my 75. I wanted to use the electronic ignition which uses the 5 wire ECU and the dual ballast resistor. I wired up the ignition the way that the diagram I had showed, but when i try to start the truck theres only 9 volts at the coil. When its in the run position theres only 3 volts.
Could anyone tell me what the resistances on the ballast resistor are supossed to be?
Also, why did dodge install the dual ballast resistors on the electronic ignition models, i thought they were for points only so you don't burn them up when the truck is running.
Also if anyone knows how I should wire up the alternator and voltage regulator that would help me out alot too.
Any and all information will be helpful.
Thanks Guys.
Zach
Also,
Does anyone know what size carberator will work well on a dodge 400? It has a carter on it right now with vacuum secondaries but i dont know the size and im thinking about getting a new one.
Thanks
Zach
Does anyone know what size carberator will work well on a dodge 400? It has a carter on it right now with vacuum secondaries but i dont know the size and im thinking about getting a new one.
Thanks
Zach
The ballast resistor is there to save the coil according to the Motors manual. It didn't list the resistance but said if a problem was suspected replace the resistor. Sorry but that is all I can tell you.
did you solve the voltage problem? like SEAL says they resistors drops the voltage once the car is running. i figure it should be more like 12 at start and 6 when running. could be wrong. another things is if the coil has a built in ballast resistor it might mess things up
Do I need the ballast resistor if I have an accel super stock coil? I have the ECU hooked up and it was working, but now all of a sudden I have no spark. I wonder if I was supossed to hook up the dual ballast resistor to limit the voltage to the ECU. Do you guys know anything about this. Could I have fried my ECU or distributor?
Thanks,
Zach
Thanks,
Zach




