Alternator amp up after Underdrive Pulleys
04-21-2005, 02:12 AM
#1
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Alternator amp up after Underdrive Pulleys
I just bought a 94 5.0 with underdrive pulleys already on it. PLanned on having the alternator either rebuilt with a higher amp or just buying a new one. What amp should i be looking for?
04-21-2005, 12:19 PM
#7
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RE: Alternator amp up after Underdrive Pulleys
I have a '94...they are correct on the amps. Raising the output won't help if the rpm is too low. I just recently put underdrives on mine and had to go with the stock alternator pulley. The 2.5 inch supplied with the kit didn't allow enough charging at idle. You can also purchase a 1-7/8 inch from www.aspracing.com. This will spin the alternator faster and take care of your charging problem.
04-21-2005, 12:35 PM
#8
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RE: Alternator amp up after Underdrive Pulleys
ORIGINAL: silver91gt
your car comes stock with a 130 amp alternator.
it should be good unless you run a 50,000 amp stereo, and 10 fog lights.
your car comes stock with a 130 amp alternator.
it should be good unless you run a 50,000 amp stereo, and 10 fog lights.
There is no way that it is that high? 130 is very high for a stock application. There is no need for a car to have an alternator that high.
I would say it is around 70 and 90 at the most. Not even Chevy trucks run a 130.
Does anybody have proof that it is 130? Just wanted to see how you came up with that number.
04-21-2005, 01:44 PM
#9
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RE: Alternator amp up after Underdrive Pulleys
ORIGINAL: Pure5.0
There is no way that it is that high? 130 is very high for a stock application. There is no need for a car to have an alternator that high.
I would say it is around 70 and 90 at the most. Not even Chevy trucks run a 130.
Does anybody have proof that it is 130? Just wanted to see how you came up with that number.
ORIGINAL: silver91gt
your car comes stock with a 130 amp alternator.
it should be good unless you run a 50,000 amp stereo, and 10 fog lights.
your car comes stock with a 130 amp alternator.
it should be good unless you run a 50,000 amp stereo, and 10 fog lights.
There is no way that it is that high? 130 is very high for a stock application. There is no need for a car to have an alternator that high.
I would say it is around 70 and 90 at the most. Not even Chevy trucks run a 130.
Does anybody have proof that it is 130? Just wanted to see how you came up with that number.
http://www.partsamerica.com/ProductL...for=Alternator
