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will the vortec heads on my 99 tahoe 350 fit on a 78 chevy 350 block and work with it without any problems?

Update:

im using everything old from my old vortec just the 78 block itself...

Update 2:

the manifold from the vortec motor is going on it...

5 Answers

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  • 1 decade ago
    Favorite Answer

    yes! but if your using the 78 intake, you will either have to change the intake to newer model one, or cut out the 4 center bolts on the old one i do it all the time.they also make a kit that comes with most new alum intakes for the 4 center hole most performance shops or catalogs will have them,

    Source(s): auto shop owner for over 25 years
  • Anonymous
    1 decade ago

    they should the only diference between the older heads an the vortec heads are that they are a smaller cc.. we just put a set of heads off a 97 tahoe 454 onto a 77 big block 454...

  • Anonymous
    1 decade ago

    the heads will bolt on but the intake manifold from the 78 will not bolt up to the newer heads.

  • 5 years ago

    could just need new plugs and wires, try the 2 prone spark plugs if you dont have them already and regular wires, they could just be bad

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  • 1 decade ago

    i don't really thing it will work cause the intake might be different, just look at it

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