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Slow Pig

Discussion in 'The Garage' started by demoore17, Dec 9, 2003.

  1. demoore17

    demoore17 Registered Member

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    HELP, I just purchased a 1985 K5 with a Jasper motor with the performance package but the DPO replaced the original/stock 4 barrel with a two barrel rotchester.....I had just installed a Holley Street Dominator Manifold (idle to 5500 rpm) and a Holley 650 Carb....know she is slow as a pig, I am going to have the T.V. cable adjusted tomorrow to get the Tranny back in line but I dont think it will do the trick. I am still running the stock Dizzy (HEI)and have about 8 degrees of advance.....

    WHAT DID I SCREW UP?

    Any thoughts suggestions or opinions are most welcome


    Thanks /forums/images/graemlins/1zhelp.gif
     
  2. sled_dog

    sled_dog 1 ton status

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    Does she stumble? Are there any things you can tell to hint maybe? Was teh carb brand new? Done any carb tuning?
     
  3. Topdown

    Topdown 1/2 ton status

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    what is the operating rpm (power band if you will) of the engine? are you under revving or over revving it? I know that some engines dont have much until you hit like 3500rpm then they go nuts.

    Also, carb tuning and distributor tuning will definitely need to happen.
     
  4. sled_dog

    sled_dog 1 ton status

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    Gearing is a big issue as well. My K5 was a dog but the motor ran fine it was the fact that I ran on 2.73s and 33s.
     
  5. Topdown

    Topdown 1/2 ton status

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    exactly... thats what I mean/meant by under or over revving it. If your running a 3.08 with a 39.5" tire your gonna have a dog... at the same time, if your running a 7.13 with a 30" tire your going to blow sky high and run the engine out the backside of its operating range. Though this is fairly uncommon...

    /forums/images/graemlins/thumb.gif
     

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