I was also going to suggest if you have an old carb laying around to pop that on and see if that helps. As far as tuning the carb, I would think that it should be pretty close out of the box for a mild 350. I had the 650 AVS on my 350 for several years and it ran great. I did some tuning with rods/jets but not too much. I also installed it on my new 383 without any adjustment and it ran great. I recently upgraded to a 800 AVS2 on the 383 and it's awesome out of the box. Might be a little rich so my plan it so jet it down a bit.

I also ran into the stumbling block of where to find the tuning/calibration kit and had to have a couple calls to Edelbrock and finally got one. I will post it. At first they sent me the chart for the AVS2 650 (attached PDF). Note that there is no calibration/tuning kit available (which sucks) so you have to purchase all of the rods and jets individually. Using the chart, you have to see what rods and jets you want/need and make a list and buy them. This is what I did for the 800.

For example, using the chart, if you want to go one stage leaner (from base/stock calibration) to number 2, you would need jet 1427 and rod 1449.

Hope this helps. This is fresh in my mind since I have just gone through it.

Jim

 

Thankyou.Thats what I was looking for. Kind of strange Edelbrock told me that rods wouldnt help a rich condition.

 

needs a Autolite 3922

 

do you have another carb to swap on for a test? Like the 1406 mentioned above? Borrow one not buy, swapping parts like this is a great way to rule out items as bad.

 

To finish up this thread,I ended up getting another edelbrock carb and going one step leaner with the needlesand fixed the problem. Thanks everyone for your help.

 

What did you end up getting?