I have a 98 ram 1500 318cid. 3" lift running 33's. On a warm day and under load I get a loud vibration noise at about 1/4 throttle. Step on the gas a little more and it goes away. Kinda sounds like a thin metal plate vibrating against another metal object. I do not have this problem on cooler days. <70degrees. It started after transmission rebuild. No performance loss when the truck is in this condition. It does happen after letting off the throttle for a second as well. Any thoughts or similar experiences?