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Thread: LS6 Intake Swap

  1. #41
    Join Date
    Sep 2004
    Location
    Breaux Bridge, LA
    Posts
    629
    Quote Originally Posted by LS6_Silverado View Post
    Hey blue cajun i was wondering what you used to make your custom idler pully for i am doing an ls6 intake swap also. Any information will be greatly aprreciated. Thanks
    hey man.
    i replied to an email today that was probably yours.
    sorry for the delay, i was out of town.

    you have to use a longer belt.
    03 Silverado RCSB
    12.41@ 104 n/a
    11.74@ 112 75 shot

    04 Silverado CCSB Z71
    15.67@ 90 n/a

  2. #42
    Join Date
    Jan 2008
    Location
    Pearsall Tx
    Posts
    4,222
    i like the low profile look but dont like the fact that the crank pulley doesnt get a full wrap from the belt,might slip???
    09'DENALI-STOCK 6.2
    08'SILVERADO-STOCKISH 6.0

  3. #43
    Join Date
    Sep 2004
    Location
    Breaux Bridge, LA
    Posts
    629
    this engine turns 6500 rpms daily and i have yet to have the belt come off or much less slip.
    03 Silverado RCSB
    12.41@ 104 n/a
    11.74@ 112 75 shot

    04 Silverado CCSB Z71
    15.67@ 90 n/a

  4. #44
    Join Date
    Feb 2008
    Location
    Vermont
    Posts
    230
    Do you need to use different injectors and fuel rails? Or is there a way that you can make just the intake work with the stock stuff? What about a 98'-99' ls1 intake and not a ls6?
    Fabrication doesn't bother me, it's just spending that money when i could possibly make it work easier.
    I'm pretty sure I'm going to have to run a ls1/ls6 intake for clearance in my 240sx swap.
    Thanks in advance for any help.
    There's no replacement for displacement.
    240sx + LS1 + T56 = 530sx

  5. #45
    Join Date
    Sep 2004
    Location
    Breaux Bridge, LA
    Posts
    629
    no u can use truck fuel rails and injectors. ls1 intake would be fine but you'll end up loosing power over the truck intake. the way i did it i believe is the cheapest and cleanest looking way.
    03 Silverado RCSB
    12.41@ 104 n/a
    11.74@ 112 75 shot

    04 Silverado CCSB Z71
    15.67@ 90 n/a

  6. #46
    Join Date
    Feb 2008
    Location
    Vermont
    Posts
    230
    I'd like to keep the truck intake, but I can't because of clearance issues with the hood. Thanks for the info.
    There's no replacement for displacement.
    240sx + LS1 + T56 = 530sx

  7. #47
    I started on this swap and have it all done exept the water pump. I read that you could use the stock truck water pump on cable style throttle bodies but since I have a nitrous plate it ended up hitting the neck. Still waiting on my l92 water pump to arrive and then I'll take some pics. I recommend to order an l92 or ls1 style pump prior to starting on the swap.
    Turbo GMC 11.09@120
    Nelson Performance 91mm Kit
    http://www.youtube.com/watch?v=QzrBQisHMyI

  8. #48
    Join Date
    Jan 2008
    Location
    houston texas
    Posts
    95
    whats a ruff estimate on price to do a ls6 intake conversion on the 5.3. and how much of a difference am i looking at in hp and torque??

  9. #49
    Join Date
    Jul 2007
    Location
    Tempe, AZ
    Posts
    66
    Great write up thanks I just got my new Idler pulley bracket today just need the intake and water pump and the install should be done in no time.
    Here are some pics of the bracket they made compared to the regular bracket that i got from a member.


    A.J.

    RCSB GMC SIERRA 00

  10. #50
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    18,378
    Nice looking billet
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

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