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Idle Speed on a 83 Jimmy w/ 350?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by beefcake83, Mar 21, 2001.

  1. beefcake83

    beefcake83 1/2 ton status

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    Hi all - Is there anyone who knows what the idle speed should be for a '83 Jimmy with a carbed 350 (Rochester)? I'd go by the sticker on the radiator support, but the original 305 was pulled, for the 350 that is there now. Thanks

    Gary Graham
    '83 GMC Jimmy 350 'Beefcake'
    Eielson AFB, Alaska
    Metallica & Mountain Dew
    http://community.webshots.com/user/beefcake83
     
  2. Blazer_Boy

    Blazer_Boy 1/2 ton status

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    Should be the same as your old 305, about 500 RPM in drive. I think the fast idle is in park (not sure) but thats 1,600 RPM.
     
  3. jarheadk5

    jarheadk5 1/2 ton status

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    After consulting my Haynes, I'll second what Blazer Boy says. Set it for 500-700 RPM, and you'll be golden.

    [​IMG] Semper Maintenance!
     

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