Any Disadvantages of a 383?

Discussion in 'High Performance Modifications' started by Flynt, Mar 25, 2007.

  1. Flynt

    Flynt Veteran Member

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    Are there any disadvantages of a 383 vs a 350?
     
  2. 79Z-28

    79Z-28 Veteran Member Lifetime Gold Member

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    More power,none that I have found.
     
  3. Camaro75LT

    Camaro75LT Masshole Staff Member Lifetime Gold Member

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    I haven't seen a high milage 383 before, usually because people I know who build motors whale the bejesus outta them. Just food for thought.
     
  4. Lowend

    Lowend Administrator. .a car, a man, a maraca. Staff Member Lifetime Gold Member

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    The only disadvantages of a 383 would be that the engine will be a little less prone to Hi-RPM operation than a 350. But we are talking the extreme RPM ranges (7000+) before this even starts to be an issue.
    For a street car there are really no draw backs to the 383 other than cost
     
  5. blown1981z28

    blown1981z28 Veteran Member Gold Member

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    I agree Lowend. They are not an RPM motor. It also depends on what do put into it. I am hoping to get a long life out of mine. The bigest issue it it pull RPMS go quick it is hard not to over tach.
     
  6. 78LT383

    78LT383 Veteran Member Lifetime Gold Member

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    Yes there are.

    They burn more fuel, make more power, and tend to lead to more tickets- and often the dreaded racing disease. They stress the car's body more (back to the more power thing) and they're addictive.

    Ummm, I think that's about it.
     
  7. KylePBZ

    KylePBZ Veteran Member

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    My thoughts exactly! As far as costing more, if you are buying a rotating assembly anyway, there shouldn't be much at all besides block clearancing and new damper and flexplate. The kits are about the same from a 350-434 for good stuff.
     
  8. John Wright

    John Wright Veteran Member Lifetime Gold Member

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    If you don't wail on them too hard...you can use stock GM parts and build it pretty cheap. All I did was take a stock cast 400 crank and have the mains turned down 200 thou and bought a set of pistons with the pins located closer to the top to work with the stock 350 rods, used the 400 flexplate and balancer. The rest is totally stock parts. If plan on beating on it, you may want to spend more for some better parts that will take the beating.

    Like you've always heard...it takes money to go fast, or a fortune to go a little faster.
    So...how fast do you want to go?
     
  9. 67lemanster

    67lemanster Veteran Member Lifetime Gold Member

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    forgot one...really hard on tires. even big wide ones LOL :)
     
  10. fabio

    fabio Veteran Member

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    is a 400sb a lot different than a 383?
     

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