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Thread: Need help tuning Demon carb
          
   
   

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  1. 02-10-2007 11:05 PM #1
    4.3L260z
    4.3L260z is offline Registered User
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    Need help tuning Demon carb

     



    I have a Chevy 4.3L V6 with a 525 CFM Road Demon carb. I was getting a large
    stumble off idle and at 3000-4000 RPM. I installed smaller squirters and it solved the off idle stumble but there is still a large flat spot from around 3000 to 4000 RPM. If anyone has any advice it would be greatly appreciated.
    Thanks
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  3. 02-11-2007 02:16 AM #2
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    thesals
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    sounds like your secondaries are maybe opening too much too soon, try adjusting them to open a little less, should get ya there
    just because your car is faster, doesn't mean i cant outdrive you... give me a curvy mountain road and i'll beat you any day
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  4. 02-11-2007 10:04 AM #3
    erik erikson's Avatar
    erik erikson
    erik erikson is offline CHR Member
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    Quote Originally Posted by 4.3L260z
    I have a Chevy 4.3L V6 with a 525 CFM Road Demon carb. I was getting a large
    stumble off idle and at 3000-4000 RPM. I installed smaller squirters and it solved the off idle stumble but there is still a large flat spot from around 3000 to 4000 RPM. If anyone has any advice it would be greatly appreciated.
    Thanks
    The stumble off idle has to do with the acc. pump.
    Try changing out the vac. sec. spring to a stiffer one.
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