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73-87 Chevy _ GMC Trucks => Performance => Topic started by: biggietalls on March 23, 2009, 01:49:08 am

Title: alternator
Post by: biggietalls on March 23, 2009, 01:49:08 am

ok so i've pretty much decided that i need a new alt. the one i have is the o.e. one thats 65 amps. now my question is what are all the alts will bolt right onto my 350 that are atleast 120 amps or more.as in if i went to a parts place what all makes, models, and years should i be looking for?

Title: Re: alternator
Post by: Irish_Alley on March 23, 2009, 02:52:33 am

generally speaking all gms are the same you will find that some of gms alt the pig tail plugs into the opposite side of the alt like i think most of them plug in about 10 o'clock but you can fin them that plug in at 6 o'clock. just go to autozone and tell them what you have they have a listing for i think 3 different alt all having diffrent amps i think the highest they go to is 90 amps

Title: Re: alternator
Post by: Blue 82 on March 25, 2009, 05:50:53 pm

If you are looking for an alternator that produces brutal power at low rpm.
The amperage/rpm chart is alternator rpm (not engine rpm)
check these out

http://www.amplepower.com/products/alt/index.html

Title: Re: alternator
Post by: Just-speed on April 01, 2009, 09:32:57 am

Order you Alt from summit. 800 230 3030.  They have there brand for your truck for $140.  And its 145 amps.

Stock Oe's were always 65 or 85 amp. Never enough. 

Just call Summit up and tell them what you want. They will hook you up.  Auto Zone will sell you a no brand for about the same cost but not near the Amps.

Title: Re: alternator
Post by: biggietalls on April 02, 2009, 02:15:35 am

not looking to buy a brand new alt possibly would like to find a used one off of a different 350 or 5.7.....if i did want a new alt i'd probably go to   and get the h/o 140 they have

Title: Re: alternator
Post by: Russ130 on April 02, 2009, 09:44:12 am

Look on gm diesel's they would have higher output alt as well as caddys too