Need help upgrading electrical system

[ingine53 10+ year member]

I have decided to get 2 kicker l7 15's and the zx1500.1 amp for my 88 suburban and have realized I need to upgrade my electrical system. My current battery and alternator are not nearly powerful enough to run the kickers. I am running low on money so I need help finding the cheapest battery and alternator that would run my system well. Also, based on the new system I'm getting, what exact specifications should I look for when searching for a new battery and alternator.

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[TurdFergueson2 5,000+ posts]

Amp hours for battery, and idle output for alts.

 

[ingine53 10+ year member]

How many of each should I look for

 

[PR1M3R 10+ year member]

The most you can get within your budget.

Do the Big "3", cheapest upgrade for your electrical you can do, and it's needed if you are upgrading alt and battery anyway.

What is your stock alternators amperage?

I have a stock 90 amp alt. I run a Yellow top under the hood and a small Kinetik HC800 in the trunk. I have a Sundown SAE-1200D which puts out almost 1400 @ 1 ohm. I have been told my electrical is fine for that. I have Big "3" in 1\0 AWG also

 

[ingine53 10+ year member]

Yea I plan on doing the big 3 with 1/0 AWG. Not sure what my alternators amperage is. So sounds like I will be fine if I got two better batteries and kept my stock alternator?

 

[PR1M3R 10+ year member]

I would think a larger vehivle like that should have 105a stock. So yes. Big "3", a GOOD battery under the hood. And something like a kinetik in the back also.

Kinetik makes great starting batteries as well as smaller ones for the trunk.

 

[ingine53 10+ year member]

Would the kinetik hc1400 be enough for under the hood?