Changing Alternators-What is necessary to use a higher amp alternator.
- Thread starter Robert907
- Start date
1911
Expedition Leader
If it's a modern truck, you won't need any other modifications for that much of an increase in amperage, assuming the mounting and harness plugs are the same.
On my 33-year-old Land Cruiser, I went from a 55 amp alternator to 200 amp. I had to replace the stock ammeter with a volt meter, delete the stock external voltage regulator, and do some minor wiring (for the new internal VR). I also put significantly larger diameter (smaller gauge) charging and ground cables to the battery.
On my 33-year-old Land Cruiser, I went from a 55 amp alternator to 200 amp. I had to replace the stock ammeter with a volt meter, delete the stock external voltage regulator, and do some minor wiring (for the new internal VR). I also put significantly larger diameter (smaller gauge) charging and ground cables to the battery.
I have been told by many, many places that when swapping to a higher amp alternator that you should also upgrade the wiring cable and also run an inline fuse
What year is your Dodge?
My 2004 only came with a 136 amp unit........and I am also looking for a replacement
https://www.dcpowerinc.com/
http://mechman.com/
Found this info......
Cummins has a ambulance package on some 5.9 appliciations, which have a 220A Denso alternator.
The Denso part number is 421000-7001
The Dodge part number is 4801313AC
Denso confirmed that it was indeed a 220A alternator.
Rated output - 12V, 220A
2 Point Characteristics - 95A min @ 1600rpm, 193A min @ 2500rpm
Output volts -15.0V
Field current - 8.0A
So with a ratio of ~3.3 (crank pulley (7.872") to alternator pulley(2.360"))
@700rpm engine idle - Alternator rpm = 2310
@1100rpm high idle start - Alternator rpm = 3630
@1500rpm high idle top speed - Alternator rpm = 4950
So this shows that at engine idle the alternator is capable of outputting almost 190A.
Denso's are very good quality and are around $350
What year is your Dodge?
My 2004 only came with a 136 amp unit........and I am also looking for a replacement
https://www.dcpowerinc.com/
http://mechman.com/
Found this info......
Cummins has a ambulance package on some 5.9 appliciations, which have a 220A Denso alternator.
The Denso part number is 421000-7001
The Dodge part number is 4801313AC
Denso confirmed that it was indeed a 220A alternator.
Rated output - 12V, 220A
2 Point Characteristics - 95A min @ 1600rpm, 193A min @ 2500rpm
Output volts -15.0V
Field current - 8.0A
So with a ratio of ~3.3 (crank pulley (7.872") to alternator pulley(2.360"))
@700rpm engine idle - Alternator rpm = 2310
@1100rpm high idle start - Alternator rpm = 3630
@1500rpm high idle top speed - Alternator rpm = 4950
So this shows that at engine idle the alternator is capable of outputting almost 190A.
Denso's are very good quality and are around $350
pappawheely
Autonomous4X4
I was looking at the two factory alternators for my '92 f-350. the only difference between the stock and high output model was the pulley size.