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  1. #1
    Join Date
    Oct 2013
    Location
    southampton
    Age
    57
    Posts
    78

    Which battery for LS3

    Need to buy battery for my 525bhp LS3 engine. Just wondering what CCA and A/H I should be looking at.
    Thanks in advance

    Andy

  2. #2
    Join Date
    May 2014
    Location
    Birmingham
    Age
    43
    Posts
    770
    I think from memory mine is a 65AH Andy, i sure others will confirm.

    Alan.
    AK Gen II on the road Jan '19
    GM LQ4 364ci, LS9 cam, Omex 710.
    Tremec T56 Terminator.
    3.27:1 Powr-lok LSD

  3. #3
    Join Date
    Oct 2005
    Location
    Cape Town, RSA
    Age
    56
    Posts
    127
    You need a decent cranking Amperage depending on your starter and compression ratio and the capacity (in Ah) accoring to your electrical users. I had a 45Ah in one of my cars, but it had basically only an electric fan. And it had 400 Ampere rating for cold cranking.

    Get the 65Ah, because of the higher amount of electrical consumers, but look for a high cold cranking ampere version. And get the same size and terminal at the same position. You may find negativ and positiv terminals on opposite ends than yours.

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