Carb Altitude Adjustments

[bigcat]

i bought a car from 7200 ft, and brought it home to 1000 ft. what all needs to be adjusted? i assume more than just the mixture screws at the bottom of the carb. the carb is a carter 2bbl. not sure about the model, but here are the numbers from the tag: 49588 3430 17 and from the carb itself: carter 2168. a google search didnt bring up much information for me. its a 71 Dodge 318 2bbl A/T for those that might need to know. does the timing need to be changed? i dont have any old school tools for carbs. (no timing lights, gauges, etc) but i do have all the regular hand tools. anything i need to pick up to get this running properly for this altitude?

i could not find the info on the mopar forums i found, and i dont really want to wait a few days for registration to be able to post and search there. any help is appreciated.

also, anyone know where i can see online information about this carb?


thanks in advance.

 

[brianj5600]

When I was a kid we have a Plymouth van and when we traveled to Colorado every summer my dad adjusted the metering rods on the 2 barrel carb to help it in the higher elevation. The metering rods had a set screw on the arm that lifted them and could be adjusted with a screw driver and an allen wrench. I don't have any specifics, sorry, but it may be that simple. The timing is likely a little too advanced as well. Seat of the pants tuning may be your only way to tell if you make it better. MPG may be a way also.

 

[Max Power]

While I know prescious little about Carter two barrels, I do know that the air is thicker down here, so you need to make it richer, if of course, it was tuned properly for the elevation you were at in colorado.

 

[bigcat]

actually, i got it from wyoming. rust free and all it has spent its entire life at 7200 ft, so i assume that it was tuned for that altitude. i got it from the daugher of the original owner. been garage kept its entire 46,000 mile life.

now if i can get it tuned for this altitude, ill be set.