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by gary72 on June 27th, 2008

gary72

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Have 454 chev, runs great, goes through the gears and then starts to pulse and won't gain speed. Have replaced all spark related parts and fuel pump and filter and checked timing. at wits end . help

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  • by allikatzpop on August 14th, 2008

    allikatzpop

    is this a standard or automatic? It may be a rev limiter.

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  • by jamnut on August 14th, 2008

    jamnut

    This engine may have a governor on it thats pulling back fuel depending on where its set at..Big blocks that are equipted with this are usually lower geared vehicles, your symptoms could be normal, depending on year of vehicle, it may be the gov. control module that is defective if its in top gear and your not reaching at least hwy speeds..need more info

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