454 swap

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by KRAZIE87K5, Mar 19, 2001.

  1. KRAZIE87K5

    KRAZIE87K5 1/2 ton status

    Joined:
    Feb 23, 2001
    Posts:
    3,369
    Likes Received:
    0
    Location:
    Chicago, IL
    You folks here are gonna get to love me as I bring the ol' K5 to life over the next month or so...

    I am installing a 454 rectangle port block into my Blazer. New (stock) motor mounts (for the 350cid) have been installed at their factory locations. Will I have to relocate them when installing the 454? Has anyone here ever tried this? If (and I'm sure I do) have to move them, where do I move them to for best placement of the motor/trans/transfer case? All this 4x4 crap is new to me... I am used to OLD fast street cars... no xfer cases there!

    I just got the motor together last night, and I'm itching to get it in the truck! (Hence question #2) Can I install the motor/trans/transfer case as one unit, or should I assemble all the parts to the engine once its installled? Here is why I would like to install it all at once... The truck already has a 6" suspension lift installed, and my trans jack can't lift high enough to get the NP205 in place. And that SOB is heavy! I think it actually weighs more than the TH350 mated to it! Sorry to keep babbling... PLEASE HELP THE ROOKIE 4x4 GUY!!! Thanks to all!
     
  2. Shawn

    Shawn Nuckin Futz! Premium Member Author

    Joined:
    Feb 17, 2000
    Posts:
    1,906
    Likes Received:
    214
    Location:
    5280'
    Build(s):
    3
    The motor mounts will align up perfect. I would suggest getting the Energy motor mounts for the SBC though. These are strong enough for any modified BBC. Stock 3/4 and 1 ton mounts for BBC won't work (I found this out the hardway) so Energy is the only way to go. I wouldn't suggest trying to install the engine/trans/tcase as 1 unit unless you remove the grille and radiator support. Separating the pieces and airing down your tires sounds easier to me.

    Shawn
    87 K5
    few mods[​IMG]
    <A target="_blank" HREF=http://www.off-road.com/chevy>http://www.off-road.com/chevy</A>
     
  3. KRAZIE87K5

    KRAZIE87K5 1/2 ton status

    Joined:
    Feb 23, 2001
    Posts:
    3,369
    Likes Received:
    0
    Location:
    Chicago, IL
    The mounts your are suggesting are on this page:
    http://www.energysuspension.com/prod1.html
    correct? I see the "clam shell" type, is that what you used? Or did you have the other type displayed on this page? The mounts I have new, but the motor will have ~500HP/500ft/lbs torque. So I don't really want to take any chances...
     
  4. Shawn

    Shawn Nuckin Futz! Premium Member Author

    Joined:
    Feb 17, 2000
    Posts:
    1,906
    Likes Received:
    214
    Location:
    5280'
    Build(s):
    3
    Correct, you want to use the clam shell type like this:
    [​IMG]
    It only comes with the poly part and it re-uses the stock top and bottom metal pieces so don't throw away your old motor mounts.

    Shawn
    87 K5
    few mods[​IMG]
    <A target="_blank" HREF=http://www.off-road.com/chevy>http://www.off-road.com/chevy</A>
     

Share This Page