Results 1 to 5 of 5

LS1 Swap

This is a discussion on LS1 Swap within the GM Trucks forums, part of the Vehicle Specific category; Anyone done an LS1 engine swap in a 98 Silverado?...

  1. #1
    Junior Member
    Join Date
    Apr 2007
    Location
    Closer to the East
    Posts
    4

    Black
    1998 Chevy Silverado

    LS1 Swap

    Anyone done an LS1 engine swap in a 98 Silverado?

  2. #2
    Junior Member WS.SICK's Avatar
    Join Date
    Apr 2006
    Location
    Pomona California
    Age
    34
    Posts
    97

    Pewter
    2000 WS.6 T/A

    dude you have a ls1 block already if its a 98-05-- the 4.8 5.3 and 6.0 motors are all LS1 blocks- you would need to change your intake manifold and heads and you will be making more power- if you have a 5.3 your already making about 290-340hp i forget exactly how much it is - a stock ls1 makes 305-310 with the LS1 intake and ls6 intake respectively- so it would be a wasted effort to swap the motor unless you have a v6 model- try getting a cold air intake, a intake manifold, some 6.0 heads off an escalade or denali yukon...port them and get some headers and a catback.. you should be making sick power- with a cam and even a supercharger..we're talking FAST FAST

  3. #3
    Junior Member
    Join Date
    Apr 2007
    Location
    Closer to the East
    Posts
    4

    Black
    1998 Chevy Silverado

    No. I had a 350 Vortec in it. This LS1 block I got out of a 2002 Camaro SS in an all aluiminum block. My 350 with a cold air intake, banks power pack that consisted of headers and 3" exhaust, a power tuner and traction bars was only putting about 210 rwhp. With this new block, along with a new intake, headers, msd coil packs, fuel rails, higher volume fuel pump and under drive pulleys - I'm hoping to have about 350 rwhp.
    I was asking if anyone had done the swap because I had questions regarding the wiring harness.

  4. #4
    Senior Member SeVeReDiStOrTiOn's Avatar
    Join Date
    Aug 2005
    Location
    Roseville, CA
    Posts
    8,164

    05 Wrangler
    00 Z28 sold :-(

    Quote Originally Posted by WS.SICK View Post
    dude you have a ls1 block already if its a 98-05-- the 4.8 5.3 and 6.0 motors are all LS1 blocks- you would need to change your intake manifold and heads and you will be making more power- if you have a 5.3 your already making about 290-340hp i forget exactly how much it is - a stock ls1 makes 305-310 with the LS1 intake and ls6 intake respectively- so it would be a wasted effort to swap the motor unless you have a v6 model- try getting a cold air intake, a intake manifold, some 6.0 heads off an escalade or denali yukon...port them and get some headers and a catback.. you should be making sick power- with a cam and even a supercharger..we're talking FAST FAST
    5.3 isn't in the trucks until 99...the bore is smaller on the 5.3 and 4.8 than the LS1 and the truck blocks are iron with aluminum being a option. The 5.3 makes 285hp -315hp depending on the year...a stock LS1 makes 345ish at the crank..they're underrated by GM.

    Don't swap the truck manifold...it's a good manifold (runner length is tuned for more low-end torque) plus a ls1/ls6 manifold isn't a direct bolt-on. I forgot what all the problems are but i know the water pumps upper neck hits the throttle body with a LS manifold on. I have a 99 5.3 and it's a great engine but you can always use more power...but remember that it's a truck when you're modding. If you actually use it as a truck you'll want as much torque down low as possible.

  5. #5
    Junior Member RandyW's Avatar
    Join Date
    Aug 2005
    Location
    Salisbury, MD
    Age
    65
    Posts
    47
    Don't swap the truck manifold...it's a good manifold (runner length is tuned for more low-end torque) plus a ls1/ls6 manifold isn't a direct bolt-on. I forgot what all the problems are but i know the water pumps upper neck hits the throttle body with a LS manifold on.
    Good advice on the intake, the truck unit is only like 2 h.p. less than the LS1 unit and makes more torque. I did my swap in a weekend a year ago February and I love it!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Trans swap for swap
    By [CJ] in forum Drivetrain
    Replies: 0
    Last Post: 08-12-2011, 01:11 PM
  2. Engine swap and computer swap
    By mrmiatanut in forum Computer & Tuning
    Replies: 4
    Last Post: 09-08-2007, 06:10 PM
  3. To Swap, or not to swap, that is the question.
    By HasselZ28 in forum Camaro / SS
    Replies: 6
    Last Post: 08-11-2007, 08:58 AM
  4. Replies: 6
    Last Post: 01-30-2006, 02:02 PM

Bookmarks

Posting Permissions

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