Carburetor help
Hey, all! I have a 1974 Monte Carlo and when I bought her back in December, she came with a new 2 barrel carburetor. I also have the original 2 barrel. About a week ago, I was doing a deep inventory of what is good and what needs replacing. This new carb is so freaking tiny! D: I was wondering if anyone thought it would be worth it to rebuild the old carb and put it back on? Would I get better gas mileage from a bigger 2 barrel? Would I get more performance out of her?
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All depends on cost, which prob just be better off replacing it. If like good mileage stick with 2bbl but performance end get 4bbl
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Tough choice there, If your plan on keeping it stock I would see which 2 bbll belongs on there and go that route providing the intake is also 1974. If that's not a concern rebuild what is on there as it would give you more power than the smaller 2 bbl. I agree with jakefluker, if you want more power go to a 4 bbl and depending on the carb size you might not even notice a fuel mileage difference if you can keep your foot out of the throttle as the primary's in a some 4 bbl carbs are usually smaller which would give you better mileage.
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Originally Posted by Jeffs02rwdSS
(Post 709195)
Tough choice there, If your plan on keeping it stock I would see which 2 bbll belongs on there and go that route providing the intake is also 1974. If that's not a concern rebuild what is on there as it would give you more power than the smaller 2 bbl. I agree with jakefluker, if you want more power go to a 4 bbl and depending on the carb size you might not even notice a fuel mileage difference if you can keep your foot out of the throttle as the primary's in a some 4 bbl carbs are usually smaller which would give you better mileage.
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Not sure what your definition of eating gas is but providing you set the timing and adjust the air/fuel ratio for a smooth idle you might get around 13-15 mpg out of a 1974. If you swap to a 4 bbl I would recommend getting a new carb over a used or rebuilt one considering the last time Chevy put one on a vehicle was about 30 years ago. Of course you could also go to fuel injection for the best economy and power for less than a grand.
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