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engine swap question

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by roostr3269, Jan 28, 2003.

  1. roostr3269

    roostr3269 1/2 ton status

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    I have a friend that has a 1989 chevy half ton p/u w/ tbi 350/5 speed. He wants to put in an older(built 1970's carb. 350). Will this go right in, tranny issues? thanx in advance.
     
  2. Sidepipes

    Sidepipes 1/2 ton status

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    86/87( can't remember) and up 350's have an externally balanced flywheel/flexplate, the 70's require a neutral balance flywheel. It shouldn't be to expensive to get one from a parts house. Just get the right size!
     
  3. roostr3269

    roostr3269 1/2 ton status

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    Thanx Mike, I appreciate it.
     
  4. fenderbender

    fenderbender Registered Member

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    All 350 are balanced the same
     
  5. 95 Silverado

    95 Silverado 1/2 ton status

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    The engine flywheels are different, the later engine has a one piece rear seal crankshaft, the earlier engines have a two piece rear seal, the ends of the crankshafts are different due to the different seal designs requiring a flywheel to match the crankshaft.
     

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