Ok so my 5.3 swap into my 94 silvy is great except for this... i took it for a decent drive in the mountains today and it seems like it is running too rich because if you keep it at half throttle for a while it just keeps bogging down and feels like its losing power but if you let off completely and then give it throttle again then it feels fine. Its like its running too rich or something. Any ideas? And also on interstate i couldnt get it to pick up speed going downhill in overdrive at like 75 mph.. but then 10 minutes later (after i had let off) it would pick up speed going uphill.. either somethings wrong or i had a hellacious headwind trying to go downhill.