I have been hesitant to say "this" fixed since I have very limited mileage on it. It's been a combination of three things that I can attribute it to.

1)Distributor air gap - Fixing this fixed the sharp jump in rpm drop seen in the video. Replacing the distributor seemed to offer no further improvement.

2)Secondary venturis - Upon rebuilding the carb, I must have swapped sides on the secondary venturis. Apparently they aren't poka-yoked, like I thought.

3) Fuel volume - I still had leaning out issues after sustained high load, I had a pair of higher flow needle & seat assemblies in a donor carb that I transferred over, those seemed to help that.

The last run pulled much better but it was very fat [10:1], so I need to back out the jetting the other way. I may have 5-10 miles on it running "well", we'll see if anything comes back. The truck gets very limited use.


1972 Barracuda - 5.7L Hemi, T56 Magnum 6spd - https://www.facebook.com/GoodysGotaHemi
2020 RAM 1500
[img]https://i.imgur.com/v9yezP9.jpg[/img]