454 swap

  1. S

    350 to 454 swap questions

    Hi all I’m a little new to this. I ended up with a 79 k10 with a sb350 and th350 trans and have been tinkering with it. Never ran right so I check compression and had zero on cyl 3 and 5. Pulled head and found an issue with the block between the two cylinders. Found a stock 454 for a reasonable...
  2. Frye442

    Intro

    I'm somewhat new to squares. I've owned them and worked on them since I was 15-16 (I'm 31 now) I'm looking at buying a 454 big block for my 86 K20, Sm465 trans. But it has a set of pistons I've never seen before, I attached an image. My gut is telling me they are a type of domed pistons for what...
  3. V

    Need help with installing a 454 in a 1979 GMC Sierra 4x4 frame

    I’m currently restoring my dads 1979 GMC Sierra 4x4. It came with a 350 in it. I bought a Gen V 454 out of a 1991 Suburban and converted it to carbureted. My engine is finished and ready to be installed in my frame. I bought 454 engine mounts but they won’t fit the frame mounts. I read that...
  4. R

    250i6 to 454 swap

    I’m swapping my 250 i6 to a 454 motor and tranny out of a 72 Monte Carlo do I need to move the motor mounts so I don’t hit the firewall? And to anyone who has don’t this what we’re some other challenges you had?

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