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What GM cars came with big blocks?

Discussion in 'The Garage' started by jp0863, Feb 14, 2005.

  1. jp0863

    jp0863 1/2 ton status Premium Member

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    i have a friend building a camaro that wants a 454 from a car. i guess the heads are a little different on the cars than the truck. anyone know what had a big block? something that might be found at a wrecking yard.
     
  2. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

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    I'm guessing he wants rectangular port heads? Really, if it was me I would just get any block and use aftermarket heads. I am not real sure about a 454 in GM cars but there were lots of 396 options in the 60's SS models IIRC. There is always the LS6 454 but those are hard to find.
     
  3. thor

    thor 1/2 ton status

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    70-74 chevelles, monte carlos, impalas, and vettes. The oval ports are the same castings between cars and pick ups of thet era, the peanut ports first showed up in 75 trucks.
     
  4. ssls6

    ssls6 Registered Member

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    Full and mid-sized cars (A bodies) from 66 to 75 or so. You'll need to learn how to recognize heads from the casting numbers or stamped engine codes.
     
  5. Lonnie P

    Lonnie P Registered Member

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    The 454 was first introduced in 1970. 74 or 75 was the last year in cars.
    After that only trucks had them. They varied in HP greatly over the years.

    Many of the High Perf versions bring good money to collectors. If planning to build one, it is a often a very good deal to get a crate motor in the long run.

    '70 was the best performance (LS6 Chevelle 450hp), but the best running ones will not run on todays fuel. As they got newer, the performance dropped (and compression), but regular fuel was a possibility.
     
  6. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    Go pull a engine from a station wagon , one that has been heat cycled on and off many times from trips doing mommy's errands . Then buy aftermarket heads :grin:
     
  7. zx672

    zx672 Registered Member

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    My dad has an old school Cadillac Eldorado....I think 1972 or 76...can't remember. It has a 502 in it w/front wheel drive :blush: and it moves that big tub of steel just fine!:D
     
  8. JIMMY76

    JIMMY76 1/2 ton status

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    Find An Old Caddy They Came With Bb
     
  9. WantedaDodge

    WantedaDodge 1/2 ton status

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    will a cad 500 bolt right in where a 350 was? I've always wanted a 500 cad motor in a truck. My blazer may just be a good excuse. The performance parts are spendy, but you don't hardly need anything other then an upgraded intake!
     
  10. mudjunkie 82

    mudjunkie 82 1 ton status GMOTM Winner

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    Is this for the street?A good set of Merlin or other aftermarket heads is the way to go.Most of the aftermarket Brands you can buy bolt right on out of the box............................
     
  11. atho

    atho 1/2 ton status

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    you need an adapter, or a BOP transmission.
     
  12. supersize75k5

    supersize75k5 OrganDonorRacing.com

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    I have a factory bore ls6 454, factory heads, everything, pm me for details if you friend is interested.:grin:
     
  13. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    You have a LS6 motor ? As in 1970 Chevelle ?
     
  14. supersize75k5

    supersize75k5 OrganDonorRacing.com

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    yup, sitting, it may be for the build for the 496, if I ever buy the kit to do it,

    I thought we already talked about this last month? I think yours or my memory is fading:D
     
    Last edited: Feb 15, 2005
  15. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Why would anybody want rectangular port heads to drive on the street?:confused:
     

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