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4.3L timing belt question

Discussion in 'General Chevy & GM Tech Questions' started by estrom, Feb 24, 2014.

  1. estrom

    estrom Member 1 Year

    Is it recommended to change the timing belt on the 4.3L every 100k miles? I don't think it's necessary, but wanted to double check. Thanks.
  2. Conlan Rose

    Conlan Rose Active Member 2 Years 1000 Posts

    Are you talking about the engine's internal timing chain that syncs the crank shaft and cam or are you talking about the serpentine belt.
  3. estrom

    estrom Member 1 Year

    I think you just answered my question Conlan. I was referring to the internal belt/chain. I couldn't recall if the 4.3 has a belt or chain, so if it's a chain, then no issues. (I change the serpentine belt almost annually.)

    Thanks again.
  4. Conlan Rose

    Conlan Rose Active Member 2 Years 1000 Posts

    No problem! Yah GM uses chains because they last longer and work better with the small block design. Which is unlike my mom's Subaru that uses a timing belt not a chain.

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