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Putting a 454 in a 1990 4X4 Suburban?

Discussion in 'The Garage' started by burbanfanatic, Jan 25, 2005.

  1. burbanfanatic

    burbanfanatic Registered Member

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    I was just curious if anybody has done the swap to put a 454 in a 1990 4x4 suburban before? It wasn't an option on 1989-1991 subs due to some crossmember or other design problem... It has crossed my mine to upgrade from a 350-454.

    Was it a lot of trouble or costly?

    Thanks!

    454 in a 3/4 ton 4x4 was never a option. GM would not put the 3/4 ton front axle behind the 454. They also put ff14's in 454 trucks in the 80's. If it had been a 350 truck it would have got a SF 14. GM would not put the D60 in the Sub so 454 was never a option on 4x4 burb till the 90's.
     
    Last edited by a moderator: Jan 26, 2005
  2. ratzila

    ratzila 1/2 ton status

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    I had nvrenuf swap in a 454 in my 90 burb. There isn't any more trouble than installing a small block. You just need all the accessory brackets for the bigblock as a lot of the parts will interchange. I went from the 350 tbi to a carbed 454. We still used the same electric fuel pump in the tank.There is no crossmember problems. You could have actually got a 2wd burb with the 454:D
     
  3. HarryH3

    HarryH3 1 ton status Author

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    Your project sounds familiar to me. :wink: Check out the link in my sig and then click "ThunderBus" on the left side of the page. :cool:
     
  4. dirtwarrior17

    dirtwarrior17 Banned

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    A swap in any of the fullsize rigs is cake because their ****in huge. I bet i could stuff and 823 cid chevy pro mod motor in my k5 with some adjustments and adapters.


    Be hatin the gas mileage tho.... :rotfl: :screwy:
     
  5. convertaburb

    convertaburb Registered Member

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    I have a ram jet 502 crate motor in a 90 4x4 suburban 1/2 ton originally. Same block as the 454, fit just fine.
     
  6. azblazer

    azblazer 1/2 ton status Premium Member

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    i think the wifes 90 V2500 could use a bigblock also...350 works just fine around town until you decide to tow something across country...


    DW
     

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