Alternator upgrade needed??

[AcesHigh 10+ year member]

I am going to be running a kicker zx1000.1, 1000 wattsX1 @ 2 ohms and a soundstream reference 200, 45 wattsX2 @ 4 ohms.

I have an '88 full size Chevy Blazer, not sure how many amps the stock alternator is. I've been told it's either a 78 amp or a 94 amp.

I plan on doing the big 3, but am I going to have to upgrade my alternator?

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[boulderbronco 10+ year member]

If those are RMS ratings it would be a good idea, but not absolutly necessary. If those are peak ratings it is not as critical. But if you are cranking it all the time then I would say yes.

 

[SyKo13 5,000+ posts]

It would be easier on the battery....

Unless you already have 2 batteries parallel, if you do just grab a 150+amp alt.

1ga Big 3 and your good to go.