Originally posted by gearhead98:
you dont need to buy a 200a alternator you already got one, well atleast i do , when i had autozone test mine it put out ~197a, i was like WTF it is a 130a alternator, the guy was like i dunno , even with the output that high, if it really is, my lights dim really bad at idle, so sometime in the near future i plan on upgrading the wiring like someone said above, see if that helps if not then i will replace the damn thing


That's because the yahoo testing it put the inductive lead on the wrong source wire. (Not all Parts People have a clue!)

It just tested the load (which is 200A btw) the ARBST machine put on the system to get the alternator to max current at a set rpm. (which for the test is just 2000rpm)


Go have it tested again and make sure they do it correctly this time.

Also at 2000rpm you will not make 130amps.
A guesstimate would be more like 90amp with it reaching 130A by 4000-5000rpm and maxing maybe 10% higher then rated at 6000-7000rpm.

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.