Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

Carburetor Mods

Discussion in 'The Garage' started by jacob_coulter, Aug 3, 2005.

  1. jacob_coulter

    jacob_coulter Registered Member

    Joined:
    Jun 28, 2005
    Posts:
    12
    Likes Received:
    0
    Location:
    USA
    I have a 78 K5 Blazer, with a stock 350, and a stock Quadrajet. I think the current carb's metering rods are too lean, and I wanted to fatten them up.

    This may be like taking a shot in the dark, but can anyone here recommend a good ballpark size for the metering rods to add some performance? I really don't have the time and money to buy a lot of metering rods and experiment. Anyone here have good luck with a particular combo.

    The car idles and starts great, it just doesn't have much grunt. The engine has a stock GM dual plane manifold (No EGR) with a stock quadrajet with a dual exhaust, no Cats. According to the build plate, the car has 3.73 gears.

    Thanks for the help.
     
  2. pauly383

    pauly383 Daddy383 Staff Member Moderator

    Joined:
    Jul 22, 2001
    Posts:
    16,217
    Likes Received:
    1
    Location:
    Mesa , Arizona USA
  3. jacob_coulter

    jacob_coulter Registered Member

    Joined:
    Jun 28, 2005
    Posts:
    12
    Likes Received:
    0
    Location:
    USA
    The tires are 33 x 12.50 15 LT

    Thanks
     
  4. pauly383

    pauly383 Daddy383 Staff Member Moderator

    Joined:
    Jul 22, 2001
    Posts:
    16,217
    Likes Received:
    1
    Location:
    Mesa , Arizona USA
    I run the same tires , and gears with a little 305/700r4 combo , and a stage 1 q-jet . A/C off I move pretty good .

    Probably time to rebuild it , or replace it .

    And maintain that engine until you can get a fresh one .
     

Share This Page