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lost engine

Discussion in 'Tips On Using The Board' started by lanny11881, Feb 18, 2007.

  1. lanny11881

    lanny11881 lanny11881

    I own what I believe to be a 1971 455 not sure thought maybe someone could help me here are some of the numbers i found on the block and heads. On the back of the block by the trans my block has 1231798 cast into it. On the passenger side is GM with a 2 underneath it behind the head. Between cylinders 1-3 are the numbers and letters 40H929221 and between 5-7 are SF 28I. On the passenger side head under the valve cover I found GM with A 16 underneath it on the frontside of the head. On the backside I found a 4 with 1231786 underneath it. ​
     
    lanny11881, Feb 18, 2007
    #1
  2. flynbuick

    flynbuick Guest

    1970 not a 1971.

    Also you miscopied or mistyped the block number. It is 1231738.

    SF combined withe VIN suggests it came out of a 1970 Riviera.
     
    flynbuick, Feb 18, 2007
    #2
  3. DaWildcat

    DaWildcat Platinum Level Contributor

    1231738 is a '70-'71 block casting, 1231786 is a '70 head. SF indicates a 1970 big car 455...looks like a non-stage 1 1970 455.

    Devon
     
    DaWildcat, Feb 18, 2007
    #3
  4. lanny11881

    lanny11881 lanny11881

    please reply
     
    lanny11881, Feb 18, 2007
    #4
  5. lanny11881

    lanny11881 lanny11881

    what kind of horsepower
     
    lanny11881, Feb 18, 2007
    #5
  6. lanny11881

    lanny11881 lanny11881

    are aftermarket parts easy to find
     
    lanny11881, Feb 18, 2007
    #6
  7. DaWildcat

    DaWildcat Platinum Level Contributor

    Factory net ratings, 370 bhp @ 4600 rpm, 510 lb-ft @ 2800 rpm.

    Devon
     
    DaWildcat, Feb 18, 2007
    #7
  8. DaWildcat

    DaWildcat Platinum Level Contributor

    Spend a few days scouring this message board...specifically the "search" function at the top. Lots of go-fast parts available.

    Devon
     
    DaWildcat, Feb 18, 2007
    #8
  9. lanny11881

    lanny11881 lanny11881

    what kind of horsepower do they run
     
    lanny11881, Feb 18, 2007
    #9
  10. lanny11881

    lanny11881 lanny11881

    looking for shorty exhaust headers
     
    lanny11881, Feb 18, 2007
    #10
  11. flynbuick

    flynbuick Guest

    flynbuick, Feb 18, 2007
    #11
  12. 65specialconver

    65specialconver kennedy-bell MIA

    Devon,thats for a stage 1 not the sf motor,is it?:Do No:
     
    65specialconver, Feb 18, 2007
    #12
  13. flynbuick

    flynbuick Guest

    He is correct but it is a small valve engine. Its output would be less than the 70 Stage one engine. Relative to the 376hp real world stage one it would be about 15 hp less or about 360hp.
     
    flynbuick, Feb 18, 2007
    #13
  14. 65specialconver

    65specialconver kennedy-bell MIA

    still smoke some rubber :3gears: :Brow:
     
    65specialconver, Feb 18, 2007
    #14

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