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400 ci or 350 ci

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Adub, Aug 28, 2004.

  1. Adub

    Adub 1/2 ton status

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    The truck I just bought says it came originally with a 400. Owner wasn't sure if the engine was original. Is there any way for me to tell?

    AW
     
  2. sled_dog

    sled_dog 1 ton status

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  3. boz42

    boz42 1/2 ton status GMOTM Winner

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    if it is a 400 & has the correct balancer on it u can tell that way. a 350 balancer is smoth all the way around. a 400 balancer has a recessed spot that runs almost half way around it.
     

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