Difference between LSA and LS9
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2009-2014 Cadillac CTS-V Performance Mods Discussion, Difference between LSA and LS9 in Cadillac CTS-V Series Forum - 2009-2014; Perhaps this has been addressed before but the thread on warranty voiding got me thinking. If the LS9 makes 638HP ...
  1. #1
    V2 BRAWN's Avatar
    V2 BRAWN is offline Cadillac Owners Member
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    Difference between LSA and LS9

    Perhaps this has been addressed before but the thread on warranty voiding got me thinking. If the LS9 makes 638HP why couldn't you make the relatively same changes to the LSA without voiding the warranty (short of changing internals)? I have no idea what the differences are but imagine that a more aggressive tune must be part of the equation. Can anyone speak to the differences and what could be accomplished?

    I want to do mods to my car but will not put myself in financial jeopardy by voiding the warranty. I have also talked to Hennessy and, unless I misunderstood what they told me, believe that they warrant their mods and said that it would not interfere with the factory warranty.

    I'm still contemplating my options and paralyzed about doing anything until I have a plan. Thanks.

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    DiamondWhtV is offline Cadillac Owners Fanatic
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    Re: Difference between LSA and LS9

    About the only similarities between the LSA and the LS9 is the displacement. Everything else is different.

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    baabootoo's Avatar
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    Re: Difference between LSA and LS9

    I believe, but I may be wrong, that the aftermarket companies only warranty THEIR work. However, I wouldn't hesitate one minute on any of the bigger companies and their products.

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    ztollon's Avatar
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    Believe the lsa is also dry sump motor which is a scavenging system. Using 1/3 of the oil

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    Crystal Red CTS-V is offline Cadillac Owners Fanatic
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    Re: Difference between LSA and LS9

    Quote Originally Posted by ztollon View Post
    Believe the lsa is also dry sump motor which is a scavenging system. Using 1/3 of the oil
    LS9 is like my Z06's LS7 in that it is a dry sump requiring 10.5 qts. of oil. LSA is not dry sump.

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    ztollon's Avatar
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    My mistake

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    Smokin80 is offline Cadillac Owners Fanatic
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    Re: Difference between LSA and LS9

    Supercharger is a 2.3 vs 1.9
    Pistons are not forged
    As said oiling is different.
    Cam is different.

    Not sure about the heads? These are the changes that come to mind

  9. #8
    wait4me's Avatar
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    Re: Difference between LSA and LS9

    Heads are different, rods are titanium, valves are titanium on the exhaust, different crank, different block, lots more of differences..

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    turbol15 is offline Cadillac Owners Enthusiast
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    Re: Difference between LSA and LS9

    I thought the block and crank were the same? what would it cost to make a lsa into a ls9?

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    Re: Difference between LSA and LS9

    block and crank are not the same. To make a lsa into ls9 would be about 13k in parts.

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    Re: Difference between LSA and LS9

    I just purchased a new V Sedan A6 and I specifically asked the dealer if I changed the drive pulleys on the SC or the crank, would it void the warranty? They told me not if the parts were GM! I said "can I get that in writing" and they said yes. However, I haven't pursued it further.

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    V locity's Avatar
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    Re: Difference between LSA and LS9

    Quote Originally Posted by DiamondWhtV View Post
    About the only similarities between the LSA and the LS9 is the displacement. Everything else is different.
    Injectors are the same...

  14. #13
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    Re: Difference between LSA and LS9

    Ls9 has piston squirters, diff cam, titanium rods, hollow exhaust valves, titanium intake valves, forged pistons and a variant of the tvs2300 blower with dry sump (as major differences).

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    Ross L is offline Cadillac Owners Enthusiast
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    Re: Difference between LSA and LS9

    IMO any changes other than exhaust(cat back) and intake WILL void your factory warranty. Forget pulleys( to up the boost to ZR1 levels), or computer mods. ALso,the Lsa does have piston squirters , a milder cam, a BETTER upper intercooler brick, and wet sump oiling which some have proven to make MORE hp than a dry sump(ZR1) type set up. The only people who *need* titanium rods and valves to turn less than 7000 rpms are the people who like to say they have titanium rods and valves. Its been done for 100's(a little optimistic) of years with forged rods( like the Lsa) and stainless valves( like the lsa). Have fun with whatever you decide

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    Da V-Man is offline Cadillac Owners Fanatic
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    Re: Difference between LSA and LS9

    Quote Originally Posted by Ross L View Post
    . . . with forged rods( like the Lsa) . . .
    FYI - the LSA uses powdered metal rods, not forged.

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