Engine/Transmission/Performance Adders Chat about your engine, transmission, nitrous, superchargers, turbos, and tuning.
Sponsored by:
Sponsored by:

Carburetor help

  #1  
Old 02-08-2018, 05:36 AM
Thread Starter
Join Date: Jan 2018
Posts: 5
Default 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?
 
  #2  
Old 02-09-2018, 02:10 PM
jakefluker's Avatar
Monte Of The Month -- October 2016
5 Year Member
3 Year Member1 Year Member
Join Date: Oct 2011
Location: adrian,mi
Posts: 411
Default

All depends on cost, which prob just be better off replacing it. If like good mileage stick with 2bbl but performance end get 4bbl
 
  #3  
Old 02-11-2018, 08:29 AM
Join Date: Nov 2017
Location: Isanti, MN
Posts: 828
Default

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.
 
  #4  
Old 02-11-2018, 08:50 AM
Thread Starter
Join Date: Jan 2018
Posts: 5
Default

Originally Posted by Jeffs02rwdSS View Post
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.
Yeah I was pretty concerned about the gas mileage. It's pretty bad right now because the new carb hasnt been tuned correctly and it just eats gas. That's why I was wondering if I should just rebuild the original 2 bbl or just drop the money on a new 4 bbl and intake. Thank you.
 
  #5  
Old 02-11-2018, 09:04 AM
Join Date: Nov 2017
Location: Isanti, MN
Posts: 828
Default

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.
 

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.