LS swap 5.3 or 6.0 ?

Discussion in 'High Tech Retrofits' started by stroked383, Dec 6, 2012.

  1. 70 gsconvt

    70 gsconvt Veteran Member

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    Choices above are for a 2500 series truck.

    Choices for a 2003 1500 series truck:

    6.0L, VIN N (8th digit)
    4.8L (VIN V, 8th digit)
    5.3L (VIN T or VIN Z, 8th digit)
    6.0L, VIN U (8th digit), CNG
    4.3L (VIN X, 8th digit)
    6.0L, VIN U (8th digit), gasoline

    Look for full size vans also. That's where I've seen some of the better deals. Not a lot of them came with the 6 liter and they can go really cheap.
     
    Last edited: Dec 24, 2012
  2. RICARDO1969

    RICARDO1969 Veteran Member Lifetime Gold Member

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    you want a 2007 or better 6.0 with the L92 heads, the trucks tend to have the better engines with more power.
    My 6.0 came from a 2008 2500 HD sierra truck with 353 horsepower and 373 lb.-ft. of torque.
     
  3. 70 gsconvt

    70 gsconvt Veteran Member

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    I just listed the 2003 engines because that's the one he could get the deal on. If you do get it, you can still sell the heads for $100-150 and get the better L92-style heads for about $400-500. They'll add about 30 horsepower.

    Aobve is correct, though. A 2007 and up truck will get you the LY6 with the better heads. Also, 2008 and up full size vans will have it. And once you hit 2010, you'll start running into the L96, which is basically the same engine, but with flex-fuel capabilities.

    Then there are the all aluminum, 6.2L L92's and L94's that came in the Cadillac Escalades, Yukon XL, Suburbans and some Denali's. They are displacement on demand (DOD) and variable valve timing (VVT). And these are generally $3K+.

    And don't forget the L76's that came in the 1/2 ton trucks. They are an all aluminum 6.0L engine.
     
    Last edited: Dec 24, 2012

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