One advantage of some larger alternators is they put out much more amperage at
low engine speeds. For a simple check of your needs, check the voltage at idle
with all accesories turned on.
If you can maintain 12.5 or so at idle you are fine, if not you may want to
upgrade. If you do upgrade, make sure your wiring is up to the max amp rating
of the alternator.
BK
---------- Original Message ----------------------------------
From: "Mark Self" <mark.self@verizon.net>
Reply-To: "Mark Self" <mark.self@verizon.net>
Date: Sun, 21 Dec 2003 07:00:25 -0800
>This is probably very elemental, but how do you select an alternator. My '55
>1st has a '79 Olds 403 init. In checking the catalogs, I see there are
>replacement alternators all the way up to 140 amps. How much do you need for
>a driver with air, stereo, electric fan & fuel pump and little else in the way
>of accesories. How much power do I need? Is there a reason to have more for
>future add ons?
>oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
|