+ Reply to Thread
Results 1 to 10 of 10

Thread: 408 90mm TB & intake swap questions

  1. #1
    Join Date
    Apr 2005
    Posts
    4,229

    408 90mm TB & intake swap questions

    OK - This is regarding the intake swap on my 2004 truck, from 78mm DBW TB & truck intake to a 2006 GTO 90mm DBW TB & intake. I have read the swap topics, but have some questions:
    1. I have seen two different links for TB harness adapters (one that is $50 from Katech, one that is $210 from Torque Rush Performance) Which one will work for me?
    2. Katech has the injector swap kit to run LS1 style injectors (orings and spacers). I have 60lb injectors now that required spacers on my truck intake. Will the Katech kit work with the 60lb injectors?

    Anything else I need? I think DBTBSS will help me make an adapter intake tube so we can reuse the water pump and not have to make or relocate the idler bracket. I can bend the coolant crossover tube if needed.

    Thanks,
    S.C.
    Gone, but not forgotten!

  2. #2
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Call Ketech's tech support line on the electronic adapter issue. The spacers you already have will probably work, just need the correct orings. They're available from sdparts, Katech or Ebay. The spacers are about 5/8" tall, probably the same as going from truck to fbody injecters.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  3. #3
    Join Date
    Apr 2005
    Posts
    4,229
    Quote Originally Posted by RedHeartbeat View Post
    Call Ketech's tech support line on the electronic adapter issue. The spacers you already have will probably work, just need the correct orings. They're available from sdparts, Katech or Ebay. The spacers are about 5/8" tall, probably the same as going from truck to fbody injecters.
    They are already closed...damn east coast.

    So, if it was 5/8" to go from truck to fbody 60lb injectors, then it would be another 5/8" to make up the difference on the LS2 intake? So 1 1/4" total?

    Will I need a tune to make it operate? I know I will need a retune for optimum performance, but will it run after the swap?
    Last edited by SCIV; 02-04-2008 at 04:46 PM.
    Gone, but not forgotten!

  4. #4
    Join Date
    Dec 2007
    Posts
    3,429
    Quote Originally Posted by SCIV View Post
    They are already closed...damn east coast.

    So, if it was 5/8" to go from truck to fbody 60lb injectors, then it would be another 5/8" to make up the difference on the LS2 intake? So 1 1/4" total?

    Will I need a tune to make it operate? I know I will need a retune for optimum performance, but will it run after the swap?
    we can make spacers. That's what the lathe is for. Didn't spend 6G's just to look at it. bring me a picture of what you want, we can make it.
    30' Ford Model A Tudor Sedan - Custom chassis - Big bore LS2 - twin B76's - Glide - 9" w/ 3.07 gears - 30" DR tire - 2k lbs cruiser

  5. #5
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    can use the bolts and spacers from the truck intake most likely. did you get the LS2 fuel rails?
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  6. #6
    Join Date
    Apr 2005
    Posts
    4,229
    Quote Originally Posted by RedHeartbeat View Post
    can use the bolts and spacers from the truck intake most likely. did you get the LS2 fuel rails?
    I got the TB, intake, fuel rails, injectors and some of the hoses.
    Gone, but not forgotten!

  7. #7
    Join Date
    Apr 2005
    Posts
    4,229
    Quote Originally Posted by DBTBSS View Post
    we can make spacers. That's what the lathe is for. Didn't spend 6G's just to look at it. bring me a picture of what you want, we can make it.
    I just want to make sure I know everything we need before we start this.
    Gone, but not forgotten!

  8. #8
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Buy you some LS2 fuel rail covers. They come pre-painted in many colors, look on Ebay.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  9. #9
    Join Date
    Mar 2003
    Location
    San Antonio, TX
    Posts
    11,038
    If you're using the ls2 intake, no need for new orings, the 60's go right in, we've installed them before and no vac leaks.
    Now if you used the l76 intake, which i know you didn't, that needs fatter orings.

    the torque harness works great, let me know if you need one, i have an extra one here, same cost as torque's site.

  10. #10
    Join Date
    Apr 2005
    Posts
    4,229
    Quote Originally Posted by farmtruc View Post
    If you're using the ls2 intake, no need for new orings, the 60's go right in, we've installed them before and no vac leaks.
    Now if you used the l76 intake, which i know you didn't, that needs fatter orings.

    the torque harness works great, let me know if you need one, i have an extra one here, same cost as torque's site.
    PM sent.
    Gone, but not forgotten!

+ Reply to Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts