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Cold feet...LS6 or 6.0L?

This is a discussion on Cold feet...LS6 or 6.0L? within the General Help forums, part of the LSx Technical Help Section category; There's is a beefed up t-56 I think....but if you research it, a lot of 500hp+ cars use the t56 ...

  1. #61
    James Bond Spikito's Avatar
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    2001 3.8 Black - sold
    2000 SS Black M6

    There's is a beefed up t-56 I think....but if you research it, a lot of 500hp+ cars use the t56

    03-04 cobras ran them no prob
    LS6 intake, Pacesetters, TSP rumbler !EGR, !AIR, 295/35 BFG KDW II's, UMI Adj LCAs. Tick Master Cylinder, LS7 Clutch and flywheel, Pro 5.0, Lous short stick, Frost Tune.

  2. #62
    Senior Member redbird555's Avatar
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    2002 Camaro Z/28 Pewter

    Yup spikito is right the viper and many other high hp cars use the t56 while it is the same casing they all have beefier shafts and gears to handle the power. The t56 is limited to around 450lb of torque they do hold up ok on high hp build but on occasion they do break. If i was building a 408 i might run it till it goesor i might just do it at the same time depends on the money issue. They do make a t-56 "magum" which is a t56 beefed up to the viper spec and even higher in some areas i believe thats good to around 700hp?

  3. #63
    O U 8 1 2 Spaz's Avatar
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    1999 trans am

    Quote Originally Posted by BashamWS6 View Post
    Well my name is Josh Basham but there are 6 other Josh's in my class so everyone calls me Basham.
    And Spaz tell me your expierence with the ls6?
    loving every moment of it since i've had it... it doesn't eat oil like every one of my LS1's did (4 of them...) and it get a bit better milage... my rear however couldn't handle the power...

  4. #64
    Moderator Firebirdjones's Avatar
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    The viper T56 is a different animal. Larger 31 or 32 spline output shaft with a different tailhousing to accomodate it. Verses our tiny little 27 spline piece.
    Alot of the internals including the sincros/dog rings, shift forks/pads are all different.

    It's all the things that can easily be upgraded during a rebuild. Most times these Fbody T56's will last a while, but most of them I see at the track aren't driven to their potential either, no clutch dumping, and if they are, it's only 2-3,000 rpms, granny shifting etc.....

    If you really get out there and get after it, with a car set to hook and dumping the clutch at 4,000 rpms or more, you start to find the T56 weak links in the Fbody. Namely the output shaft snaps. Stripping the cluster gear is another one. The more the car weighs multiplies the problem.

  5. #65
    Impounded
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    Quote Originally Posted by Spaz View Post
    loving every moment of it since i've had it... it doesn't eat oil like every one of my LS1's did (4 of them...) and it get a bit better milage... my rear however couldn't handle the power...
    How long did ur rear last? How hard did you push it? Did it see the strip much? Driving habits?

  6. #66
    Senior Member redbird555's Avatar
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    2002 Camaro Z/28 Pewter

    spaz jw but i thought the mpgs would have decreased for the ls6 seeing as it has bigger cam and heads how much did you gain?

  7. #67
    O U 8 1 2 Spaz's Avatar
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    []D [] []V[] []D
    1999 trans am

    Quote Originally Posted by BashamWS6 View Post
    How long did ur rear last? How hard did you push it? Did it see the strip much? Driving habits?
    the rear didn't last very long after the LS6 went in but i never did any really hard launches with it...

    Quote Originally Posted by redbird555 View Post
    spaz jw but i thought the mpgs would have decreased for the ls6 seeing as it has bigger cam and heads how much did you gain?
    nope... i gained a whooping 1 mpg city driving...

  8. #68
    Spaz is My Mentor SMWS6TA's Avatar
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    Navy Blue Metallic
    98 T/A w/a little mods...

    Tick Performance Viper build T56 tranny would fix issues with LS6/LQ4/LQ9 upgrades.

    They are about $2k

  9. #69
    Smiles for 9.5 Years cammed goat's Avatar
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    Phantom Black Metallic
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    I have looked online and from what I have found, the LS1 dynos at 307 rwhp. The LS2 dynos at 333 and the LS6 dynos at 355. All stock. So, building on a budget should be fine with headers, ported TB, CAI, tune.

  10. #70
    Senior Member redbird555's Avatar
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    2002 Camaro Z/28 Pewter

    I could have sworn ive seen ls2s dyno more than that. Dont forget all ls6 dynos are done on m6's seeing as thats the only way they came, ls2's could have been had with an auto which may explain the lower dyno numbers but it is for certain that ls6s do seem to dyno higher when modded. Also remember that ls6's and ls2;s are always in irs equipped cars which are known to eat more power than a solid axle so i would expect them to dyno a tad higher on avg in an fbody.

  11. #71
    Junior Member ijtsox-ls1's Avatar
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    red+black
    98 z28 ls6

    i just finished a ls6 long block swap and unfortunatly had to keep the ls1 intake for the time being , well on a automatic with just Borla cat-back and slp lid with k+n filter after tunning it put 356 to the wheels

  12. #72
    Moderator 35th-ANV-SS's Avatar
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    02 35th LE Camaro SS

    The LS6 is discontinued.

  13. #73
    autoconnectionllc.com 02transamce's Avatar
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    well damnit,guess I have to start planning for a ls3.
    Posted via Mobile Device

  14. #74
    Senior Member redbird555's Avatar
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    2002 Camaro Z/28 Pewter

    Quote Originally Posted by ijtsox-ls1 View Post
    i just finished a ls6 long block swap and unfortunatly had to keep the ls1 intake for the time being , well on a automatic with just Borla cat-back and slp lid with k+n filter after tunning it put 356 to the wheels
    good numbers, no lt's? or ANY other mods? if so thats a healthy ls6

  15. #75
    Junior Member ijtsox-ls1's Avatar
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    red+black
    98 z28 ls6

    no it was just a swap to a ls6 long block nothing fancy yet.

  16. #76
    Senior Member redbird555's Avatar
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    2002 Camaro Z/28 Pewter

    nice man mine will hopefully be in a month or so. im hoping for 380 with full bolt ons through my auto you dyno makes it look attainable lol

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