BluePrint Engines

Visit our community sponsor

Thanks Thanks:  0
Likes Likes:  0
Results 1 to 7 of 7

Thread: Has anyone used an LM4 or other truck-based LS motor?

  1. #1
    Junior Member
    Join Date
    Sep 2017
    Posts
    2
    Post Thanks / Like

    Has anyone used an LM4 or other truck-based LS motor?

    So I'm guessing that using an LS motor from a donor truck instead of a car wouldn't be a problem when registering a GTM using the SB100 "body type" method, but I'm wondering if anyone has done it. When performing an engine swap, using a truck motor in a car is not allowed so I just want to be sure it's a non-issue in a kit car. I have read everything I could find on the subject.

  2. #2
    Banned
    Join Date
    Aug 2011
    Posts
    669
    Post Thanks / Like
    Don't know about the laws in Cali, but I'm using an lq4/ls3 head hybrid in mine in N.C. You'll need the car oil pan, accessories, ls1 water pump, etc. Kalstar used an l33 aluminum 5.3
    Last edited by carbon fiber; 09-17-2017 at 10:02 PM.

  3. #3
    PLATNUM Supporting Member
    wallace18's Avatar
    Join Date
    Apr 2012
    Location
    Trenton, Florida
    Posts
    5,381
    Post Thanks / Like
    Check a thread by Kalstar. He used a truck LS in his GTM build.

  4. #4
    Junior Member
    Join Date
    Sep 2017
    Posts
    2
    Post Thanks / Like
    Thank you both.
    Carbon- I'd like to check out your build thread too if you have one.

  5. #5
    LCD Gauges's Avatar
    Join Date
    Apr 2011
    Location
    Toronto, Ontario
    Posts
    1,545
    Post Thanks / Like
    Blog Entries
    3
    I'm using a modified LQ9 in my car. Nothing in Ontario, Canada that prevents us from using a truck motor.
    Custom LCD Gauges , Data Loggers, Control Touch Screens
    www.LCDdash.com \\ 647-522-9953 \\ Voice & Text
    Proud new owner of GTM Gen 1., #105 - 08/27/11
    LQ9 Powered, G96.00 6 speed transaxle

  6. #6
    Banned
    Join Date
    Aug 2011
    Posts
    669
    Post Thanks / Like
    There's been four with truck engines: Kalstar (L33 stock with cam) blast3ro (LM7 twin-turbo) carbon fiber (modified LQ4/LS3 heads) Procision Auto (modified LQ9). Three of us are running G96.00 or G96.01 instead of the G50 transaxle also.
    Last edited by carbon fiber; 09-20-2017 at 07:30 PM.

  7. #7
    Junior Member
    Join Date
    Dec 2015
    Posts
    23
    Post Thanks / Like
    For anyone down the road searching for this topic: The Gen III truck blocks are identical in dimensions, however there is a boss on most of the blocks that is not drilled and tapped. This is where ffr mounts the low alternator bracket, you will have to drill and tap this. Other than that I went and bought all new ls1 corvette accessories(you don't want to have to replace these in the car). Holley makes a low profile oil pan but almost all ls engine oil pans bolt up.
    As far as legality, I've never heard of not being able to use a truck motor in a car. There are aluminum truck engines that are nearly identical to their car counterparts.

Posting Permissions

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

Brown County Customs

Visit our community sponsor