69 440 carbs 4618 and 4640 what is the difference??

Posted By: m46rat

69 440 carbs 4618 and 4640 what is the difference?? - 12/08/14 07:20 PM

A buddy needs one for his A/C auto. sunroof car. Just trying to find the correct one for him. Is one of these for A/C application? Thanks for your help everyone.

Posted By: hemi68charger

Re: 69 440 carbs 4618 and 4640 what is the difference?? - 12/08/14 08:29 PM

From mymopar.com

http://www.mymopar.com/index.php?pid=55

4618 440 A/T
4640 440 A/T & A/C

Posted By: cudaman1969

Re: 69 440 carbs 4618 and 4640 what is the difference?? - 12/08/14 09:04 PM

4640 it has the hot idle compensator

Posted By: 375inStroke

Re: 69 440 carbs 4618 and 4640 what is the difference?? - 12/10/14 08:42 AM

That's what I thought, then I went to rebuild mine.

Isn't this the hot idle valve, thermostat, whatever?