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Thread: engine

  1. #1
    Junior Member SHOW GUEST
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    engine

    can i bore a 1960 283 to 4 inch bore safely

  2. #2
    Senior Member DYNO OPERATOR
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    Best way to find out is have it sonic tested.

    TS1955

  3. #3
    Senior Member RACING JUNKIE oldandtired's Avatar
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    Quote Originally Posted by TS1955
    Best way to find out is have it sonic tested.

    TS1955
    x2. Back in the day, we would bore +.060 to make a 292 screamer.
    Dave
    http://www.racingjunk.com/profile/343797
    "All that is necessary for the triumph of evil is for good men to do nothing" Edmund Burke

  4. #4
    Senior Member DYNO OPERATOR
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    engine

    I think it would be easier to just start with a 350 block.

  5. #5
    Senior Member RACING JUNKIE
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    I did bore one to 4.00 in the early 60's making a 301" and got away with it, it ran damn good in my 55Chevy 4 dr. but i'm not suggesting that every blk will bore to 4.00.

    Zip.

  6. #6
    Senior Member EXPERT BUILDER
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    Re: engine

    Quote Originally Posted by milkcr8
    can i bore a 1960 283 to 4 inch bore safely
    Sonic test first as I have seen some that will and some that will not!!!
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  7. #7
    Senior Member RACING JUNKIE
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    Unless you have a high dollar set of pistons that you absolutely MUST use on this build, I wouldn't even worry about it. The HP gain from a handful of inches is no where worth the headache you could create for yourself. Just cram a bunch of compression in the motor and a some GOOD parts in the valvetrain and let her rip. I love hearing those old small cubic inch motors screaming at 8000+ rpm. Ya gotta love it. It makes me reminisce about times that were before my time :?
    "The problem with quotes on the Internet is that you cannot confirm their validity"- Abraham Lincoln

  8. #8

    Bore 283

    Let me summarize. Can you bore a 283 to 4"? Yes. Have guys done it without sonic testing the block? Yes. Were they lucky? Most were. The purpose of sonic testing is because during machining operations on a new block, there is room for error. You want to call that core shift? Bottom line is if the machined bore is not in the center of the cylinder casting, there most likely will not be enough meat on the short side to allow the motor to survive. So you put the dough in it and then waste all those parts... My solution to that dilemma was to find an old 327 with a small journals, and put the 283 crank in it. Good luck.

  9. #9
    Senior Member EXPERT BUILDER
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    Hell just find a 350 block put the Clevite MS 1110 H bearings you can use a small journal crank in a large journal block!!!
    WWW.CNCBLOCKSNE.COM
    IS A DIVISION OF
    HINKSON AUTOMOTIVE
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