Recommended cfm carburetor for a stock 305 V8 engine?

Discussion in 'Engine Topic' started by golfer, Feb 16, 2011.

  1. 5spd540

    5spd540 Veteran Member Lifetime Gold Member

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    Factory q jet then a eddy 600
     
  2. DoTheDew

    DoTheDew Veteran Member

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    I run a 600 eddy with no problems. However, if I had the option and were in the market, I'd opt for a 500 eddy. 600 is more than enough for a 350, and if you do the math for a 305, it works out to 470ish cfm, unless you have afr heads or something similar.

    I'd also run more timing. If its a smog era 305, you can get away with a lot of timing due to the low compression. It'll really wake it up. I run 20 intial, and have the lightest springs, and its a whole other engine.
     
  3. 1980RS

    1980RS Veteran Member

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    1406 eddy would work just fine on a 305 as they are a little too lean out of the box for a 350.
     
  4. z28rod

    z28rod Veteran Member

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    500 eddy
     
  5. MartinD

    MartinD Veteran Member

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    If the TOP flaps are not opening, adjust the tension spring.The actual secondary flaps are semi mechanical
     

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