Originally Posted by Holder350
No they won't, the only way to get more amps from an alternator is to increase the size of the windings and rectifier. Which on modern alternators is impossible considering there is no unused space inside the casing.
"mean green" and similar companies sell a high quality OE replacement alternator that is marketed with its peak amperage rating instead of the more realistic continuous amperage rating most are rated at.
I recommend upgrading the alt to a 130mm 136amp from a caravan (modification to the bracket is required to get the larger case to fit)
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Finally, someone who know what they are talking about. The higher output is meaningless, unless you have a large load like a winch. The output is determined by the regulator, period end of story. Add up everything in your vehicle Headlights, AC on max stereo at window cracking volume, I doubt you will reach 80 Amps. The regulator will see this and adjust the output accordingly. Of course the alternator must be turning at rated RPM (about 1500 RPM's). Depending on the pulley's, 1500 Alternator RPM may or may not be 1500 Engine RPM. The only noticeable difference you probably won't notice would be a shorter re-charge time after starting.
OEM or equivalent is fine.