Thread: GP GXP 5.3 LS switching LS motors in this body.

Results 1 to 5 of 5
  1. #1 GP GXP 5.3 LS switching LS motors in this body. 
    SE Level Member
    Join Date
    Aug 2011
    Location
    Tennessee
    Posts
    4
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Chats
    0
    Hi looking for some major help from anyone who knows how to correctly answer. Question is does anyone know if any 5.3 LS motors that are out of the Chevy Silverados and such or LS motors out of Camaros firebirds corvettes and such will fit under the hood of the GP GXP as a bolt up either to the trans already factory from GM in those cars the Monte ss or impala ss or GP gxp or such or if adapter plates are available to make this happen or not? So to say I've seen alot of posts where the factory LS4 motor already in these cars from GM isn't worth the time or money to mess with build or whatever so if I was to find a different LS motor from GM models trucks or other rear wheel models GM offers or even a crate what would it take to make it work in this car or can it even be done period. Thanks so much for any or all help I can get.
    Reply With Quote  
     

  2. #2 Re: GP GXP 5.3 LS switching LS motors in this body. 
    SE Level Member
    Join Date
    May 2020
    Location
    Pittsburgh
    Posts
    58
    Thanks (Received)
    6
    Likes (Received)
    8
    Dislikes (Received)
    0
    Chats
    0
    Unless I have bad info, none of them would fit. The LS4 had to be it's own engine because of the space requirements of the car. I think(?) it's something to do with the starter mounting? They physically changed the shape of the block in some manner to fit it in a fwd platform.
    Reply With Quote  
     

  3. #3 Re: GP GXP 5.3 LS switching LS motors in this body. 
    GT Level Member Hurricane87's Avatar
    Join Date
    Jul 2016
    Location
    Brevard County, FL
    Posts
    308
    Thanks (Received)
    2
    Likes (Received)
    5
    Dislikes (Received)
    10
    Chats
    0
    They also yammer about a "single belt accessory drive," as if every car hasn't had that since the 1990's. Supposedly the entire thing is only one inch shorter, which suggests it should be possible to fit it if you moved enough other things. Whether it would be worth the effort, and whether there's a practical way to connect it to the tranny, are separate issues.
    Reply With Quote  
     

  4. #4 Re: GP GXP 5.3 LS switching LS motors in this body. 
    GrandPrix Junkie SgtMarshal's Avatar
    Join Date
    Feb 2012
    Location
    Kemmerer, Wyoming
    Posts
    4,642
    Thanks (Received)
    9
    Likes (Received)
    24
    Dislikes (Received)
    0
    Chats
    56312
    there are two components in the block that are shortened so the LS4 overall is 13mm shorter than all the other LS engines.
    Reply With Quote  
     

  5. #5 Re: GP GXP 5.3 LS switching LS motors in this body. 
    SE Level Member
    Join Date
    Mar 2018
    Location
    NY
    Posts
    133
    Thanks (Received)
    1
    Likes (Received)
    3
    Dislikes (Received)
    0
    Chats
    0
    Anything can be done with the right amount of time/money/fabricating. This gtp has a 6.0 vortec Driving my RWD swapped 6.0 GTP for the first time!! - YouTube

    As far as the LS4 there are things you can do with it as it is closely related to the other LSx motors...alot will require fabrication i imagine more so due to fitment in the engine bay & being transverse. There were a handful of turbo builds out there. Furches Performance comes to mind. He worked on a few LS4 builds himself. Not sure if he's still active
    Reply With Quote  
     

Similar Threads

  1. Considering switching from 3.05 to 3.29 gears.
    By Roofus in forum 1997-2007 4 speed Automatic (4T65E) (4T65E-HD)
    Replies: 5
    Last Post: 06-24-2017, 06:25 PM
  2. Question on able to do this, on switching body of one car to another
    By bradycatsmokey in forum Introductions/Noob Questions
    Replies: 1
    Last Post: 05-04-2016, 04:03 PM
  3. Switching DIC
    By ndgprix in forum General Tech Discussion
    Replies: 1
    Last Post: 12-08-2010, 01:30 PM
  4. switching motors.
    By Machzzzz1 in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 7
    Last Post: 08-27-2010, 02:26 PM
  5. wheel switching
    By 99ta01gt in forum Tires & Wheels
    Replies: 2
    Last Post: 02-15-2010, 01:15 PM
Tags for this Thread

View Tag Cloud

Bookmarks
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
  •