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.

Swap 305 to 350

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 84Blazr, Jan 4, 2001.

  1. 84Blazr

    84Blazr Registered Member

    Joined:
    Nov 29, 2000
    Posts:
    50
    Likes Received:
    0
    Location:
    Stillwater, New Jersey
    What would be some possible problems that I will run into by swapping an '86 350 thats currently mated to a SM465 into an '84 K5 that has a 305/700r4? I'm keeping the 700r4. would there be any problems as far as parts not matching up, 'cause I thought that I had heard somewhere that swapping motors newer than 85 into 84 and older would not be just a basic switch, is that true? I would really like to get that 305 outta there soon!! thanks

    Know any GOOD Wheelin' in Northwest Jersey, let me know?
     
  2. pcorssmit

    pcorssmit 1/2 ton status

    Joined:
    Jan 2, 2001
    Posts:
    1,346
    Likes Received:
    0
    Location:
    Denver, CO
    You will need a flexplatel from an '86 or newer motor, as they are different from the older style ('86 and newer blocks use one piece rear main seals). The flexplates are not too expensive. Other than that, I can't think of any real problems. I have an '87 motor in my '83, using the original '83 700R4. The donor truck had a manual.

    Pete

    '83 K5, 350 TBI (ex 6.2), Dana 60/14 bolt, Detroits, 3" lift, 15-39.5x15 TSLs
    '97 Dodge 2500 4x4 CC LB Sport, Cummins 5 spd
     
  3. 84Blazr

    84Blazr Registered Member

    Joined:
    Nov 29, 2000
    Posts:
    50
    Likes Received:
    0
    Location:
    Stillwater, New Jersey
    Thanks for the info...

    Know any GOOD Wheelin' in Northwest Jersey, let me know?
     

Share This Page