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2004-2007 Cadillac CTS-V Performance Mods Discussion, Mod LS6 or swap LS3? in Cadillac CTS-V Series Forum - 2004 - 2007; Originally Posted by Minytrker I vote for LS3, but Im probably partial since I have one in mine. http://www.cadillacforums.com/forums...wap-cts-v.html Miny, ...
  1. #16
    Ct$-V's Avatar
    Ct$-V is offline Cadillac Owners Member
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    Re: Mod LS6 or swap LS3?

    Quote Originally Posted by Minytrker View Post
    I vote for LS3, but Im probably partial since I have one in mine.

    http://www.cadillacforums.com/forums...wap-cts-v.html
    Miny, have you tracked the swap yet? What kind of g's-any oil pressure problems? Looks like 1.3g's for over a couple of seconds is the issue.

  2. #17
    PISNUOFF Guest

    Re: Mod LS6 or swap LS3?

    I will give you $1000 if you hold (or even get to without wrecking) 1.3 g's.
    lollygagger8 likes this.

  3. #18
    Ct$-V's Avatar
    Ct$-V is offline Cadillac Owners Member
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    Re: Mod LS6 or swap LS3?

    Quote Originally Posted by PISNUOFF View Post
    I will give you $1000 if you hold (or even get to without wrecking) 1.3 g's.
    Fair enough, definitely have not seen that much. At Road ATL last month I hit 1.18 on Michelin SS. I just figured 1.3 was attainable when I go to slicks.

  4. #19
    liqidvenom is offline Cadillac Owners Connoisseur
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    Re: Mod LS6 or swap LS3?

    Quote Originally Posted by PISNUOFF View Post
    I will give you $1000 if you hold (or even get to without wrecking) 1.3 g's.
    does that hold for others as well

  5. #20
    yooper's Avatar
    yooper is offline Cadillac Owners Enthusiast
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    Re: Mod LS6 or swap LS3?

    Quote Originally Posted by Ct$-V View Post
    Fair enough, definitely have not seen that much. At Road ATL last month I hit 1.18 on Michelin SS. I just figured 1.3 was attainable when I go to slicks.
    Sent you a pm.

    I consistently pulled 1.27 at Autobahn Country Club in Joliet, IL. Hard on tires.

  6. #21
    Minytrker's Avatar
    Minytrker is offline Cadillac Owners Member
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    Re: Mod LS6 or swap LS3?

    Quote Originally Posted by Ct$-V View Post
    Miny, have you tracked the swap yet? What kind of g's-any oil pressure problems? Looks like 1.3g's for over a couple of seconds is the issue.
    Wont ever see the track, its just a fun daily driver. Its a lot faster than my G8 which runs 12.9's. I only ran the G8 to see if it would break into the 12's. Its hard to go run my street cars at the track when I have a race car. Zero oil pressure issues but I know its never seen 1.3g's for seconds thats for sure.

  7. #22
    PISNUOFF Guest

    Re: Mod LS6 or swap LS3?

    Quote Originally Posted by Ct$-V View Post
    Fair enough, definitely have not seen that much. At Road ATL last month I hit 1.18 on Michelin SS. I just figured 1.3 was attainable when I go to slicks.
    I only hit mid 1.2's with R-Comps at Road Atlanta. Even so, they weren't sustained for that long.


    Quote Originally Posted by liqidvenom View Post
    does that hold for others as well
    I'll give you $1000 if your g-meter EVER hits 1.3 and a tree is not involved. Haha

  8. #23
    RyRidesMotoX is offline Cadillac Owners Enthusiast
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    Quote Originally Posted by PISNUOFF View Post
    I'll give you $1000 if your g-meter EVER hits 1.3 and a tree is not involved. Haha
    I'm so going to try this in a giant empty parking lot near my house.

  9. #24
    PISNUOFF Guest

    Re: Mod LS6 or swap LS3?

    You may be able to whip it sideways and it might spike that high when it catches, but the $1000 for it even hitting 1.3 was for liqidvenom. Lol

  10. #25
    vms4evr is offline Cadillac Owners Member
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    Re: Mod LS6 or swap LS3?

    The issue with the LS3 also holds true for the LS7, which is a shame. A number of folks have blown up LS7s in C6 Z06s. Long fast sweeping turns, a much lighter car, and sitting on extremely fat Hoosiers, running the motor way up in 3rd. Or worse the guys who have tried banked tracks for fun, like Daytona, doing the Rolex course. I think the Caddy is too heavy and you just can't get enough Gs on it for sustained periods. Road Atlanta doesn't have long sweepers. It's a damned fast track and scares me more than most with that last crazy-ass turn. I think VIR in hog pen or the Glen in the sweeper after the bus stop strains the oil from draining back worse. Also Sebring on the last turn. Again all those assume you have really good grip. Street tires would be sliding long before you starve the motor.

    In my C5 Z06 I have a modded, after 50K miles, LS6. All top end. Heads, intake, cam, rods, timing chain, oil pump, headers. Dyno came out to about 456/rwhp. Red line is set to 7000 (could go to 7200-7400). I try not to hit it much but I do in 3rd some of the time. No oiling issues or starvation. I run no sump but I do have an oil cooler mounted in the nose. So running about 8qts in the motor. My power band from 4-7K looks and feels great. The car is also stripped and weighs in about 2800lbs empty. Coil-over suspension with poly bushings and Wilwood brakes. Corner weighted and max camber we could get running on Grand Am Continentals (Hoosiers) or Hoosier A6/R6 scrubs.

    The LS6 loves track duty and will take it all day long. Just bring about 1 qt of oil to replace. They tend to blow by a lot even with a catch can setup. But they don't blow up!

  11. #26
    thebigjimsho's Avatar
    thebigjimsho is offline Cadillac Owners 10000+ Posts
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    Quote Originally Posted by PISNUOFF View Post
    You may be able to whip it sideways and it might spike that high when it catches, but the $1000 for it even hitting 1.3 was for liqidvenom. Lol
    Including V2s?

  12. #27
    Jeff James is offline Cadillac Owners Member
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    Re: Mod LS6 or swap LS3?

    LS3 would be a better DD and still leave you grinning from ear to ear every time you get in it. I def. second this notion. The LS3 has way more potential for gain. Run your LS6 until it breaks!! Suggest getting a GM reman.(may have some new ones still) LS3 GS engine and Intake. You will have the coveted Dry sump (DD may have space issues to add a DS tank) and a 12m/12k warranty. Do NOT buy it from Summit or Jeg's unless you want to get F'd on the warranty. An LS3 with hot Cam or even ASA will be way more docile (ie: driveable) on the street and go like hell on the track. It will also have much low end Tq than a heavily modded 400*RWHP LS6.
    BTW- The new Z28 will have an LS7 and the Dry sump is std. Not sure where the tank is though.

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