455 swap

Discussion in 'The Bench' started by MRSHLEEPY76, Feb 24, 2004.

  1. MRSHLEEPY76

    MRSHLEEPY76 Active Member

    Just curious how much work would it be to change out 350 to a 455 on 70 lesabre?
     
  2. 72Skylark455

    72Skylark455 Well-Known Member

    engine mounts, transmission will hook up probably no problem.. might need a different flywheel... i remember the people who installed mine had trouble finding the flywheel for whatever (maybe that was due to me having a Turbo 375.. )

    oh, and you'll need a new fan shroud.. i might have missed somethin else..
     
  3. MRSHLEEPY76

    MRSHLEEPY76 Active Member

    How would I go about lining up the mounts?
     
  4. brblx

    brblx clueless

    it MAY not be the same for fullsizes, but i believe it is, since 455's were an option.

    all you have to do is find a set of frame pads for a 455 and bolt them to the correct holes in the front crossmember. then the 455 mounts will bolt right up.
     
  5. rh455

    rh455 Well-Known Member

    Big car mounts are the same. The frame pads are different. The only difference in the mounts is GS's have one hole for the pin, big cars have two. This is a photo of an Electra mount.
     

    Attached Files:

  6. MRSHLEEPY76

    MRSHLEEPY76 Active Member

    Thanks for the input....
     

Share This Page