I have a spare alternator, but I'm unsure if it's stock 40 amp or if it would be an upgrade output. I got it in a box of parts that I bought from a guy a while back. If I take it to have it tested would they be able to tell me what the amperage is? It has a Bosch reman tag on it AL236X.

Their tester usually has a meter on it that should tell them the output of your alternator.

And they may also be able to cross reference the part number.

I also found this statement all over the web.....

"Product Note: Production: -07/1973, Remanufactured The original alternator is a 50-amp Hitachi unit. Bosch alternator AL 232 X is the equivalent replacement. 60-amp Bosch alternator AL 236 X can also be used in its place where higher alternator output is desired. Reuse of the pulley and fan from the old alternator may be required."

So it sounds like a 60 amp alternator. most likely Externally regulated???

Thanks a bunch! After I posted I did a web search and found basically the same info. Externally vs. internally regulated??? Benefit or???

Internally regulated will allow you to eliminate the Voltage regulator across from the alternator, on the fender. Both MSA and I sell the Internally Regulated Alternator adaptor...

Externally regulated is the stock set-up. Most like to upgrade to the Internally regulated alternator for better amperage for better charging, lights and general power use. I did it in my 70' because I have HID lights, fog lights, 800 watt stereo etc, etc. Faster battery charging is great when you're using your stereo to entertain the neighborhood.

Dave

O.K. Dave, thanks for all the info. My current stock alternator seems to be working fine, but I would like to upgrade to the good stuff you sell. Do I need the alternator upgrade to see the benefit from your products or could I get by with what I've already got? My electrical system is in good shape and never been tampered with btw.

Edited January 9, 201114 yr by 5150 will
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You'll Benifit either way. My upgrades will help your cars in many ways but the Alternator upgrade will charge the battery faster and at lower RPM's, which means better lighting at idle speeds, as compared to stock alternator output.

Start with the Headlight and parking light upgrades then do the alternator upgrade later and you'll see another improvement. If you go thru MSA, they'll likely already have some in stock. I almost prefer you use Motorsport to purchase the upgrades, as they order in bulk and it's better for me and Classiczcars.com

Dave

Sounds great Dave, Thanks!