Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

3.9 4bt in place of a 6.2?

Discussion in '1982-Present GM Diesel' started by stoney126, Mar 15, 2006.

  1. stoney126

    stoney126 1/2 ton status

    Joined:
    Jun 2, 2005
    Posts:
    1,458
    Likes Received:
    0
    Location:
    napa,CA
    hey all, I wa wondering if there is any benefit to this swap? has anyone done it? What power can you get out of the 4bt reliably and still have a good mpg.
    Crewcab59 you got a pm coming :D
     
  2. imiceman44

    imiceman44 1 ton status

    Joined:
    Aug 5, 2002
    Posts:
    15,160
    Likes Received:
    1
    Location:
    Sacramento, CA
    There are some that have done it.
    I like the cummins better than the 6.2 for crawling, I like the 6.2 more for highway driving, a V8 can go higher RPMs so with regular trannies it's nicer to drive, but for off road I will always go with a straight 4 or 6.
     
  3. 72chevydsl

    72chevydsl Registered Member

    Joined:
    Jan 22, 2006
    Posts:
    12
    Likes Received:
    0
    Location:
    modesto CA
    The only advantage I see is getting rid of the 6.2. Oh yeah & the 6.2 will be replaced with a real diesel. An OD tranny would make it a lot more drivable.
     
  4. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

    Joined:
    Aug 28, 2002
    Posts:
    9,097
    Likes Received:
    144
    Location:
    california
    Well for one the 3.9 4 banger is capable of a lot more power. I hear it can make 300HP/650ft lbs or so with some modifications, thats a lot more than a 6.2 can make with a turbo and other mods.
     
  5. mcinfantry

    mcinfantry 1/2 ton status

    Joined:
    Dec 2, 2003
    Posts:
    308
    Likes Received:
    0
  6. K10ANDYKHAMNIC

    K10ANDYKHAMNIC 1/2 ton status

    Joined:
    Sep 17, 2001
    Posts:
    1,962
    Likes Received:
    0
    Location:
    Western CO
    do they take forever to spool up like a 5.9 ?:rolleyes:
     
  7. CrewCab59

    CrewCab59 1/2 ton status

    Joined:
    Aug 13, 2005
    Posts:
    483
    Likes Received:
    0
    Location:
    Knoxville ,TN
    They can be made to spool up faster or slower,depends on turbo!!!

    CrewCab59
     

Share This Page