Charging System Upgrade
Thread Starter
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Freshman User
Joined: Jun 2007
Posts: 27
Likes: 1
From: Bishopville, SC
Charging System Upgrade
Ive got a 69 F100 with a 390. I want to upgrade my charging system(on a budget
) and I need some basic info. First, is the stock unit a 1G alternator? If so will any 1G fit or is it vehicle specific? Has anyone had any problems with a 1-wire unit like low output? I would like to go 1-wire if I can. Maybe a Powermaster 140 amp unit. Also I have read about upgrading to a 3G. Will a 3G fit without any modification to the brackets. Thanks for the help.
) and I need some basic info. First, is the stock unit a 1G alternator? If so will any 1G fit or is it vehicle specific? Has anyone had any problems with a 1-wire unit like low output? I would like to go 1-wire if I can. Maybe a Powermaster 140 amp unit. Also I have read about upgrading to a 3G. Will a 3G fit without any modification to the brackets. Thanks for the help.
Cargo Master
Joined: Oct 2004
Posts: 2,148
Likes: 0
From: Seneca, SC
The one ground (I think this is what you are talking bout) is interchangeable with others. Try getting your stock alternator re-wound by a local alternator rebuild shop. This is WAAAAAAAYYYY cheaper than buying another one, and you can get it wound up to 200 amps in most cases. A buddy of mine got it done for about $140.
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
What do you need all that alternator power output for? I just picked up a 1992 Crown Victoria Police Interceptor and it only has 140 amps alternator for all the radios and lights. Even with 4 batteries, 2 under the hood and 2 in the camper, 90 amps was way more than enough.
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
Originally Posted by amish77
Extra amps help keep the voltage constant under draw, which in turn helps keep the batteries from tanking on you. Also a big stereo needs a LOT of amps to keep the voltage steady.
Thread Starter
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Freshman User
Joined: Jun 2007
Posts: 27
Likes: 1
From: Bishopville, SC
Mainly, I like the powermaster 1-wire alt for the look. I just wanted to know if anyone had upgraded and if so, how it worked out for them. I am in the process of adding a amp and sub however, so the added power my be needed to keep it bumping.
