[Question] 454 5140 crankshaft
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454 5140 crankshaft

  1. #1
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    Default 454 5140 crankshaft

    i have a question about a crank. i'm building a 100 over 454 chevy for my sanger ski hydro. my target hp is about 700. i have a nos forged 5140 crank part #3963524. i was told this crank will not support that kind of hp. what do you guys think? thanks, bill

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  3. #2
    Senior Member PCE680's Avatar
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    It will work just fine.
    Last edited by PCE680; 02-18-2012 at 05:40 PM.

  4. #3
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    Quote Originally Posted by PCE680 View Post
    It will work just fine.
    X2. IMO the only real drawback with the OEM crank is the external balance.
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  5. #4
    Senior Member ohflat's Avatar
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    mine is 100 over but internal bal very snappy

  6. #5
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    Better be sure it is straight.

  7. #6
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    That crank will be fine make sure to have it checked for cracks and straiteness mines was bent .003 had it straiten and make sure you have a good balence job I had one in a 477 cu 14.2.1 comp motor turned it 7600 and held up

  8. #7
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    Default 454 crankshaft

    thanks for your help. many people think its ok. i think he wants to sell me new parts. going to look for a new machine shop.

  9. #8
    Senior Member tkriley13's Avatar
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    I`m no expert by any means however I had my .030 454 block split a sleeve and trashed the whole motor...I know some people that have done that .100 over and never had a problem me I dont have that luck

  10. #9
    gn7
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    Quote Originally Posted by tkriley13 View Post
    I`m no expert by any means however I had my .030 454 block split a sleeve and trashed the whole motor...I know some people that have done that .100 over and never had a problem me I dont have that luck
    I'd blame the sleeve. I no fan of .100 over BBC blocks. But you should have no problems with a sleeve at .030 unless your pushing some serious NOS.
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