Thread: 3400 swap

Results 1 to 15 of 15
  1. #1 3400 swap 
    SE Level Member
    Join Date
    Oct 2019
    Location
    spring, tx
    Posts
    24
    Thanks (Received)
    0
    Likes (Received)
    2
    Dislikes (Received)
    0
    Chats
    0
    I have a 02 grand prix with the 3100. Nothing is wrong with the motor just has 83k on it. I have a fresh rebuilt 3400 and a rebuilt 4t65 transmission both with 500 miles on them from my 04 grand am that was wrecked. I have wire harness and pcm for the grand am as well. Can I swap my 3400 and 4t65 into my 02 prix?
    Reply With Quote  
     

  2. #2 Re: 3400 swap 
    SE Level Member
    Join Date
    Oct 2019
    Location
    spring, tx
    Posts
    24
    Thanks (Received)
    0
    Likes (Received)
    2
    Dislikes (Received)
    0
    Chats
    0
    Any body?
    Reply With Quote  
     

  3. #3 Re: 3400 swap 
    GTX Level Member QUICKSILVER462's Avatar
    Join Date
    Jun 2009
    Location
    HUDSON
    Posts
    1,132
    Thanks (Received)
    3
    Likes (Received)
    8
    Dislikes (Received)
    0
    Chats
    0
    Anything is possible with enough money and labor.
    Its alot of work to gain just .3 ltr, and still be stock.

    "If it aint broke, dont fix it!"
    Reply With Quote  
     

  4. #4 Re: 3400 swap 
    SE Level Member
    Join Date
    Oct 2019
    Location
    spring, tx
    Posts
    24
    Thanks (Received)
    0
    Likes (Received)
    2
    Dislikes (Received)
    0
    Chats
    0
    What about 3100 to 3800?
    Reply With Quote  
     

  5. #5 Re: 3400 swap 
    Donating Users bandook's Avatar
    Join Date
    Apr 2015
    Location
    Columbus, OH
    Posts
    1,781
    Thanks (Received)
    2
    Likes (Received)
    27
    Dislikes (Received)
    0
    Chats
    246
    Now you're talking more sense. Get the L67 and go from 175hp to 240. There are a bunch of these engines in local salvage yards.
    Top Swapped 01 Imp
    VS (very small?) cam, SD Headers, 2.8" pulley, 29°, ported everything, E85, AEM water/meth, Deka 60's, HPT tuned
    Reply With Quote  
     

  6. #6 Re: 3400 swap 
    SE Level Member
    Join Date
    Oct 2019
    Location
    spring, tx
    Posts
    24
    Thanks (Received)
    0
    Likes (Received)
    2
    Dislikes (Received)
    0
    Chats
    0
    What all would in need besides motor, ecu, harness, motor mounts? Would in need the transaxle or would my 3100 4t65e work? I ask cause I have access to a 01 gp with the 3800 n/a motor
    Reply With Quote  
     

  7. #7 Re: 3400 swap 
    Donating Users bandook's Avatar
    Join Date
    Apr 2015
    Location
    Columbus, OH
    Posts
    1,781
    Thanks (Received)
    2
    Likes (Received)
    27
    Dislikes (Received)
    0
    Chats
    246
    I'm sure you'll need the harness and pcm. Maybe Axel's? I honestly have no clue but I'm sure you'll find the info if you search this site. Good luck! Search the 3.1 section here.
    Top Swapped 01 Imp
    VS (very small?) cam, SD Headers, 2.8" pulley, 29°, ported everything, E85, AEM water/meth, Deka 60's, HPT tuned
    Reply With Quote  
     

  8. #8 Re: 3400 swap 
    GXP Level Member coolone's Avatar
    Join Date
    Nov 2011
    Location
    NY
    Posts
    2,374
    Thanks (Received)
    0
    Likes (Received)
    3
    Dislikes (Received)
    0
    Chats
    1651
    Dropping the 3800 into the 02 GP will be an easier path than trying to get the 3400 in and everything working IMHO. Plus, the 3800 can then be top swapped for nice power.
    Overkill BBC Cam, YT 1.8 RR's, Rhodes Lifters, STGII Heads, GenV, Pacesetters, 3" Exh to Tips, TEP Trans. N*, ID 75# injectors/E85 coming soon
    Reply With Quote  
     

  9. #9 Re: 3400 swap 
    SE Level Member
    Join Date
    Oct 2019
    Location
    spring, tx
    Posts
    24
    Thanks (Received)
    0
    Likes (Received)
    2
    Dislikes (Received)
    0
    Chats
    0
    Ok so I just got done removing the 3800 setup and turns out it's supercharged. We rednecked the removal. We just cut the b pillars doors and floor away from the fire wall, unbolted the exhaust disconnected the engine harness and basically wleded a trailer hitch to the frame portion and towed it home with my neighbors truck lol I'm from the country. Oh I even got the ecu and gauge cluster
    Reply With Quote  
     

  10. #10 Re: 3400 swap 
    Donating Users bandook's Avatar
    Join Date
    Apr 2015
    Location
    Columbus, OH
    Posts
    1,781
    Thanks (Received)
    2
    Likes (Received)
    27
    Dislikes (Received)
    0
    Chats
    246
    Well then, YEEHAA!
    Top Swapped 01 Imp
    VS (very small?) cam, SD Headers, 2.8" pulley, 29°, ported everything, E85, AEM water/meth, Deka 60's, HPT tuned
    Reply With Quote  
     

  11. #11 Re: 3400 swap 
    SE Level Member
    Join Date
    Oct 2019
    Location
    spring, tx
    Posts
    24
    Thanks (Received)
    0
    Likes (Received)
    2
    Dislikes (Received)
    0
    Chats
    0
    I'm gonna tear down the engine and replace all gaskets, bore the block 20 over port and polish the heads and intale
    Reply With Quote  
     

  12. #12 Re: 3400 swap 
    GTP Level Member
    Join Date
    Oct 2014
    Posts
    770
    Thanks (Received)
    2
    Likes (Received)
    7
    Dislikes (Received)
    0
    Chats
    0
    ^^^careful with that. Do your research on the 3800 rebuild.

    Others may chime in.

    Love the removal method!!


    Sent from my iPhone using Tapatalk
    Reply With Quote  
     

  13. #13 Re: 3400 swap 
    SE Level Member
    Join Date
    Oct 2019
    Location
    spring, tx
    Posts
    24
    Thanks (Received)
    0
    Likes (Received)
    2
    Dislikes (Received)
    0
    Chats
    0
    Hey I'm from Conroe tx we fix everything with duck tape, wd40 a bfh and if all else fails a redneck with a cutten torch lol
    Reply With Quote  
     

  14. #14 Re: 3400 swap 
    GrandPrix Junkie
    Join Date
    Oct 2009
    Location
    St. Louis
    Posts
    4,724
    Thanks (Received)
    18
    Likes (Received)
    75
    Dislikes (Received)
    0
    Chats
    0
    Do NOT touch the shortblock. This ain't your regular oil burnin 350 that your cousin threw new main and rod bearings in and run it for another 11 million miles.

    The 3800 lower end needs a LOT of machine shop work to be rebuilt properly. If not you will likely end up with a ~300 mile motor at best.

    Leave the entire lower end alone. Slap a new pan gasket on it, do the rear cover gasket and the lower intake manifold and other assoc. gaskets and call it good. If you feel like porting the heads have at it. Also be aware that the head bolts are torque to yield and will need to be replaced if you remove them.

    These engines will run into the several hundred thousands with just basic maintenance. Hell, I've got almost 400K on my motor. Never opened up anything beyond the LIM/UIM gaskets. Runs just fine and still pushes good oil pressure. Then there are the turbo GP's running around just fine on a stock bottom end as well. Just tryin to save you some money and a lot of headache. Do some research on here and I'm sure you'll find the info you need. If not, just ask us!
    Reply With Quote  
     

  15. Likes bandook liked this post
  16. #15 Re: 3400 swap 
    GT Level Member Hurricane87's Avatar
    Join Date
    Jul 2016
    Location
    Brevard County, FL
    Posts
    404
    Thanks (Received)
    2
    Likes (Received)
    7
    Dislikes (Received)
    11
    Chats
    2
    The best thing you can do with a 3400 is take a shotgun and put it out of your misery. Feel free to PM me for details.
    Reply With Quote  
     

Similar Threads

  1. GM 3400 overheat
    By wa9zug in forum 3.4L V6 (LQ1) DOHC
    Replies: 7
    Last Post: 11-16-2014, 03:41 PM
  2. 3400 sfi H.O.
    By simpson66 in forum General Tech Discussion
    Replies: 6
    Last Post: 02-19-2013, 07:34 PM
  3. 3400 sfi H.O.
    By simpson66 in forum 3.4L V6 (LQ1) DOHC
    Replies: 1
    Last Post: 02-19-2013, 12:46 PM
  4. 3400 thermostat
    By loopy smurf in forum 3.4L V6 (LQ1) DOHC
    Replies: 5
    Last Post: 01-04-2013, 10:11 AM
  5. HELP 3400 swap into 3100
    By ssgtarivera in forum 3.1L V6 (LHO/LG8)
    Replies: 5
    Last Post: 12-17-2012, 12:53 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
  •