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Thread: sbc 400

  1. #1

    sbc 400

    I have a 400 block bored .060 over with a 350 crank in it i just got does anyone know what the displacment would be?

  2. #2
    Senior Member SENIOR BUILDER
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    Re: sbc 400

    Quote Originally Posted by Prater22
    I have a 400 block bored .060 over with a 350 crank in it i just got does anyone know what the displacment would be?
    bore
    4.185
    stroke
    3.48
    c.i
    382.9579172496

  3. #3
    Senior Member RACING JUNKIE curtisreed's Avatar
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    The formula is bore x bore x stroke x .7854 x number of cylinders in case you want it for later.

  4. #4
    Senior Member DYNO OPERATOR
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    SBC

    In the old days I had one of those, but it was a 377.

    I think a 348 is with a 3 1/4" stroke 327 crank.

  5. #5
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    Re: SBC

    Quote Originally Posted by markdunlap
    In the old days I had one of those, but it was a 377.
    377 is a 4.155 bore

    Quote Originally Posted by markdunlap
    I think a 348 is with a 3 1/4" stroke 327 crank.
    3 1/4 =3.25

  6. #6
    Senior Member RACING JUNKIE curtisreed's Avatar
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    Re: SBC

    Quote Originally Posted by wrightway
    Quote Originally Posted by markdunlap
    In the old days I had one of those, but it was a 377.
    377 is a 4.155 bore

    Quote Originally Posted by markdunlap
    I think a 348 is with a 3 1/4" stroke 327 crank.
    3 1/4 =3.25
    I believe he meant a 348ci is with a 3.25 stroke.

  7. #7
    Senior Member SENIOR BUILDER
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    Re: SBC

    Quote Originally Posted by doorracer
    Quote Originally Posted by wrightway
    Quote Originally Posted by markdunlap
    In the old days I had one of those, but it was a 377.
    377 is a 4.155 bore

    Quote Originally Posted by markdunlap
    I think a 348 is with a 3 1/4" stroke 327 crank.
    3 1/4 =3.25
    I believe he meant a 348ci is with a 3.25 stroke.
    Opps apparently I did not get that ops:

  8. #8
    .060 over 400 block!? better fill it with block filler and pray.

  9. #9
    Senior Member EXPERT BUILDER
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    Wow Prater... from reading your next thread about methanol questions, and revealing you are running dirt modified circle track, I have to strongly agree with garyc about "hope and pray" on this 60 over engine, especialy because you cannot block fill a circle track engine and keep it cool. 400s are already notorious for overheating and cracking, even on methanol. I have built and raced many circle track engines, including 400 blocks, but 30 over is about max for a GM 400 block. You probably want to start thinking about a backup engine to have ready...
    I'm not hatin... I'm just sayin...


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