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motor mounts

Discussion in 'Chevy Trucks' started by Super Digger, Jan 11, 2003.

  1. Super Digger

    Super Digger Junior Member
    Messages: 3

    I have a 76 3/4 ton 4X4 chevy that had a small block 350, I am now trying to put a 454 big block. Is there a difference in the mounts on the motor between small and big block? or between 2wd & 4wd?

    Thanks, Don:drinkup:
     
  2. wyldman

    wyldman Member
    Messages: 3,265

    I haven't done that particular swap,but I have done a lot of other GM's.Most all use the same motor mount,the rubber insulated one,and it bolts to the front cross member.It may bolt into a different location though,as there are several bolt holes in the crossmember.The engine side,or bucket,is most likely different for the big blocks.It would pay to take a look at another truck with a big block if you can find one,to determine who holes the mounts bolt into on the crossmember.

    I also don't believe there is any difference from 2WD to 4WD.
     
  3. Super Digger

    Super Digger Junior Member
    Messages: 3

    Thanks, for the reply wyldman, everyone I talk to say that there is no difference between small block & big block mounts and between 2 & 4 Wheel drive. I am not sure what to do next..:(
     
  4. wyldman

    wyldman Member
    Messages: 3,265

    Do you really need the big block ? what about just warming up the small block ?

    If you have the mount buckets off the 454,you should be OK.I'd give it a shot.Worse case senario,you may have to get a new set of mounts,they are dirt cheap,i'd probably put new ones in anyways.