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.

What do I need to replace TH 350 to a TH 400 in a 74 K5 4X

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by wfotyme, May 12, 2003.

  1. wfotyme

    wfotyme Registered Member

    Joined:
    Oct 29, 2002
    Posts:
    17
    Likes Received:
    0
    Location:
    Fresno, Ca.
    I have a 74 K5 that I put 1 ton suspension under W/a pumped TH 350. Now that 74 is now exempt in Ca.I put in my Stroker Small Block..Dynoed at 580 HP..I don't think this tranny will last.I have a TH400 that I'd like to put in. Are there kits to do this? Any info would be appreciated.
     
  2. Ryan B.

    Ryan B. 3/4 ton status GMOTM Winner

    Joined:
    Jul 18, 2001
    Posts:
    5,693
    Likes Received:
    0
    Location:
    CA
    Try doing a search...

    What transfer case?
    The problem is your th350 is 27 spline and a th400 is 32, so you'll need to find a th400 version transfercase and adapter or have your t-case modified to 32 spline. /forums/images/graemlins/k5.gif
     

Share This Page