Alternator Upgrade

[shatar4]

Just got my 505 up and running but noticed that the 80 amp. alternator cannot keep up with the Contour fans that I have installed. I need a bigger alternator to keep the battery charged but after looking at the Mopar brand, there's has to be a cheaper alternative. GM maybe?

[Chryco Psycho]

Common problem cooling fans eat a lot of power , add electric fuel pump & water pump & EFI & 120 amps is the starting point !
 I had a custom Ford alt built by a refurbisher & customized the mounting , it made 120 amps with the external regulater still used

[brads70]

Not cheap but this is what I'm using. Works well! 
http://www.qualitypowerauto.com/item_557/Chrysler-Mount-Mega-Amp-Alternator.htm

[dodj]

Not cheap but this is what I'm using. Works well! 
http://www.qualitypowerauto.com/item_557/Chrysler-Mount-Mega-Amp-Alternator.htm

You powering up Barry?!? 
Seriously, what are you running that draws sooo much power? 

[brads70]

You powering up Barry?!? 
Seriously, what are you running that draws sooo much power? 

Electric fuel pump, 2 electric fans, MSD, tranny controller, 

[shatar4]

Not cheap but this is what I'm using. Works well! 
http://www.qualitypowerauto.com/item_557/Chrysler-Mount-Mega-Amp-Alternator.htm

I looked at those. Very nice alternators but I don't think the accountant (wife) would go for that.
When I do change this, I'm thinking I'm going to have to change the wire to a bigger gauge like a 8-10 gauge going to the battery. I already did the bulk head bypass so thats not an issue.

[Bucks70RT]

I run a Denso 90 amp alternator on my small block. The Denso 120 amp is the same configuration. Rock auto $95. Had to modify the adjuster bracket and change the pulley.

[Bucks70RT]

Also one on my Demon 440.

[Cudakiller70]

Not cheap but this is what I'm using. Works well! 
http://www.qualitypowerauto.com/item_557/Chrysler-Mount-Mega-Amp-Alternator.htm

Wow making your car a backup generator for your home !

[brads70]

Wow making your car a backup generator for your home !

Naw.... portable welder!    One year while driving the 7 1/2 hour trip to Carlisle ( I only had 1 electric fan at the time, now I have 2) the 100amp alternator I was running couldn't keep up and left me stranded at a gas station about 1 1/2 from Carlisle. The battery was totally dead, I had to buy another one locally. I didn't want a repeat performance of that so I got the 250 amp 1 wire version. The old set up was fine for just running around locally as I'd put on the battery tender when not driving the car, but on a long trip is when the alternator showed it wouldn't keep up.

[dodj]

t so I got the 250 amp 1 wire version.

What size wire do you use between the generating station and battery? 

[brads70]

What size wire do you use between the generating station and battery? 

Just some old lamp cord I had laying around , why?   

   I mounted  my battery in the trunk, and used welding cable for the main line running from the battery to the engine compartment.