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525 cfm road demon carb jet size
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jumaica
Novice
Dec 8, 2010, 9:16 PM
Post #1 of 4
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525 cfm road demon carb jet size
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I have a 525 cfm road demon carburetor On my 1988 chevy montecarlo ss with the 305 ss. Motor. Does anyone know what size jets come on this particular carburetor without actually taking the carb apart. I was gonna go down a few jet sizes because it runs too rich at idle and uses way too much gas for a small block. If anyone have any suggestions please feel free to lay it on me. Thanks in advance.
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 9, 2010, 3:52 AM
Post #2 of 4
(3217 views)
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Re: 525 cfm road demon carb jet size
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As you have already been told. This is info your going to have to research yourself. They haven't used carbs on a car in more than 20 years so that is not info that anyone is going to have without a lot of research and your the one to do that. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Dec 9, 2010, 5:35 AM
Post #3 of 4
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Re: 525 cfm road demon carb jet size
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If this carb was designed as a bolt on exact fit for this car it should be preset. If idle mixture screws are tamper proof it's messed up for this car. There isn't much magic playing with carbs for more performance since the 60s. You are wasting time and money, hurting the engine and probably have a car that's not street legal! There wasn't anything much better than an well set OE Quadrajet that came with this OE. It's an art to get them just right. If you don't have a clue how to adjust it you should send it out to some place that can or go back to all OE - IMO. Buy a car from the 60's if you want to play, T
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