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Thread: Official NBS 4.3v6 to GEN 3 V8 swap Guide

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  1. #1
    Join Date
    Feb 2010
    Location
    North County San Diego
    Posts
    61
    The frame mounts won't work. You'll need to buy or find frame mounts for the silverado. My donor engine was from a tahoe and they gave me the existing frame mounts and it was a no go. The engine mounts are the same. I just got new ones before the install. Their not that expensive.

  2. #2
    Join Date
    Dec 2010
    Posts
    2
    Thank you very much for the quick reply. That's good to hear the motor mounts will work even if the frame mounts won't.

    The dealership near me wanted $300 for the full set unfortunately. That sounded way high to me, but I didn't really know. Im scouring junkyards now.

  3. #3
    Join Date
    Feb 2010
    Location
    North County San Diego
    Posts
    61
    Just know that the frame mounts that you need are to different molds. If I remember right, the passenger side was a bit bigger and cost more (new) then the driver side. If you get a set from the junk yard and they Are the same size, it's the wrong ones. I think the total cost for the frame mounts at the dealer was $150. I got my engine mounts online from rock auto. They had the beat prices for th engine mounts.

  4. #4
    Join Date
    Jan 2011
    Location
    Lake Charles, LA
    Posts
    15
    Yall are so lucky to have been able to do that to your trucks I know I will someday but noone I know around here is interested to help me, Im pretty sure I'll need another set of hands to swap everything around when the time comes. Im just glad I have all of you on here for reference lol.

  5. #5
    Join Date
    May 2009
    Location
    hot & windy
    Posts
    1,117
    Quote Originally Posted by Dreamer View Post
    Yall are so lucky to have been able to do that to your trucks I know I will someday but noone I know around here is interested to help me, Im pretty sure I'll need another set of hands to swap everything around when the time comes. Im just glad I have all of you on here for reference lol.
    that's what i said... til i got a little extra motivation - something along the lines of a broken rod
    00 FRC - just top end, exhaust, and a hot-air intake
    99 Sierra - 5.3 / 5spd
    ↓ click the pic for the build ↓

  6. #6
    Join Date
    Jan 2011
    Location
    Lake Charles, LA
    Posts
    15
    Yeah I read up on your post I appreciate the detail you went into yours too every bit of info (and pictures!) helps me feel like I can eventually do this, just out of curiousity how much do you think I would need at the most to complete this task, after all the parts, and other expenses? I know it would be over a couple grand but if it were to be over 4 or 5 then I dunno. Im sure it all would depend on how efficent I would want it to be in the long run such as previous people said.

  7. #7
    Join Date
    May 2009
    Location
    hot & windy
    Posts
    1,117
    if it ends up costing 4 or 5 grand, then


    ...unless you're really doing it right!

    i spent around 2, i think for everything
    00 FRC - just top end, exhaust, and a hot-air intake
    99 Sierra - 5.3 / 5spd
    ↓ click the pic for the build ↓

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