10 years on 454 mag!!
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10 years on 454 mag!!

  1. #1
    Junior Member
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    Default 10 years on 454 mag!!

    my marine power 390 hp 454 hasnt skipped a beat in 10 years of use. no leaks no nothing. i have rebuilt the at 309 pump twice but no engine work.
    am i on borrowed time or am i good to go another 10 years

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  3. #2
    Senior Member Robert Jonsson's Avatar
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    yeah, go for it

  4. #3
    Broke mo fo djunkie's Avatar
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    I'm going on 19 years on my Merc 454 mag. Not even a valve cover removed. It still got the paint on the bolts and the original Quadrajet carb on it. Shes a little tired but still runs great.

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  6. #4
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    gotta love an engine that doesnt have enough power to hurt it self

  7. #5
    Senior Member matt1840's Avatar
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    Quote Originally Posted by sac carrera View Post
    gotta love an engine that doesnt have enough power to hurt it self

    surely your not talkin about the 455

  8. #6
    E-7 Sheepdog (ret) SmokinLowriderSS's Avatar
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    Lowrider's original 454 went from 1978 to 2004 untouched. You've got a ways to go.

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