Hey everyone. Just a quick question. I bought a DMI lower mount alternator bracket and the alternator they recommend is from east coast auto electric. I would like to find one local like something at a NAPA so I don’t have to special order one if it dies. So what is everyone using for a mini 1 wire alternator for there big block dodge. Thanks

I don't think you'll find a local source for a one wire alternator. Generally those one wire alternators are OEM alternators that have been reworked to make them one-wire. If you have a local electrical shop that repairs alternators they can probably build you one, but you can't walk into a NAPA and order a one wire alternator for a Geo or something like that. The OEM's don't use one wire alternators since it is a crappy design. Drag racers don't care about crappy designs, they just like stuff that is simple. That is why drag racers don't use power valves or vacuum advance and stuff like that. Just because it works for drag racing doesn't mean it is a good idea for a street car.

Thanks for the clarification. So what is a good mini alternator to go with? What do you guys recommend

I put a Denso # 210 0106 60 amp on my race car. Pulley it to run max rpm at your rev limit for decent results. Since i don't have a lot of draw on my system it works great. The wiring is very simple. I used spade connecters at the alternater rather than the 3 wire teeminal sold for the alternater.
One wire goes to switched 12v and one to the charging side of the alternater if you run a very large zero loss output to battery. Otherewise you need to go seperately to battery so you get true voltage the alternater is sending to the battery. I used #4 welding cable to make sure i had a zero loss from output lug to battery +.
Whether it will do the job or not for you depends on your setup. I run a big radiater fan some, an electric water pump, MSD7 a fan for me and other gadgets like airshifter , box, and tail light. The battery stayed at full charge all day.

If you have fuel injection, high compression, or big fan and fuel pump the mini is the wrong choice. Mine is rewound for 75 amp. It also has a pulley to speed it up to nearly 3-1. It still needs recharging nearly every round. Also running 2 batteries.
Doug

I had a 90 amp Powermaster one wire alternator on mine for a long time. It worked OK, but at the track it couldn't keep up. I do have a big electric fuel pump, water pump, and big electric fan that I run a lil while w/ the engine off to cool it down.
Had the local auto electric shop build me a slightly bigger frame alternator that's supposed to be putting out 115+ amps. I know it works much better.
He told me that there was no way the Powermaster was putting out the claimed 90 amps...more like 80 when he tested it.

My thinking is if you're gonna run your cooling system b/t rounds to cool it down...either get a BIG alternator or don't bother w/ one at all and just use a charger.

I have that bracket on a 383 and used this alternator. It's a70 amp alternator, but there should be a 90 amp one that you could use.

FYI, this is a nice looking alt. bracket, but I ended up making my own timing pointer that I installed in the slot on the bracket that was intended for a crank trigger sensor. If I did it over again, I'd look for other options.

https://www.autozone.com/batteries-...ufactured-alternator-14903/5752_480818_0

Forgot to add, this is a 3 wire unit. It's easy to wire up, not sure what is the big deal about a 1 wire setup.

I bought Andy's kit that uses a Denso from a RAV4 Toyota in the stock location on a 440 and discovered that if I used his spacers and tensioner with the Summit billet bracket I had for the stock alternator, the Denso lines up perfectly. IIRC that alternator is 90 amp.

Kevin

I used a Denso unit from a 1990 Toyota pick-up and it works perfectly. I mounted it low on Andy's motor plate and wired it up like Greg did but when I salvaged it off the truck I took the connector with it. It charges a constant 14.8 volts at idle and keeps my battery charged all the time.

Gus

105 amp Powermaster here: Trimmed a bit to fit but it works.

Thanks everyone I appreciate it.

The most reliable alternator imo is the ford 3gen rated at 135 amps which is more than enough for anyone’s needs wiring it is so easy and you can go to any autozone pep boys or parts store to get