Okay this has been awhile since I touched this subject but I finally got other projects to the point where I needed things to do and this was it, dialing in the charger. So far this is what I know:
it has the 71 440 carb 4966s. However, in 71 they had two avs's for a 440 automatic, well it turns out this is the non-hp version (a guess) since it has the smaller bore (1-7/16 to the 1-11/16), venturi (1-3/16 to 1-7/16) and primary jets (.089 to .101). I thought I found the 70 440 AVS version in my carb stash (which was sized the same as the 71 440 HP carb) but as I tore that down I realized that was my dads "parts" carb and was junk.
I have been chasing what I believe is a lean issue on the car as in it burns your eyes to stand near it while running at idle. So when I tried to rebuild the 70 440 AVS (and found out it was junk) I tore into the the 71 440 AVS that was on it. It had the correct jets, but the incorrect rods. It should have the rods that measure .065x.062x.053 but had the rods .0675x.064x.058. I believe I found my lean issue...
Now, I know this carb is not optimal for this car, but the vacuum readings I got on it are as follows:
idle in neutral: 12-14 inHg
idle in gear: 8-9 inHg
cruise: 15-20 inHg
WOT: 1-2 inHg
I put the correct rods back in the carb from the junked 70 AVS, but I believe I have a couple other AVS's that may have the .101 jets in them (since finding the carter strip kit 10-106 or 10-202 is either impossible or cost prohibitive) that I could rob out. Would there be an issue running this carb that has smaller primaries with the .101 jets with the proper rods?
