Re: Transmishion jolt
That sounds like you have torque converter shudder. Especially since you said you get it in first and somewhat in second. The clunking/jolt could be the clutches in the converter slipping then grabbing. It is real common for the converters to go in these trucks. I would look at your fluid real good for metal particles and or burnt smell dark color. If you find any of those flush the whole system and refill it and see if the problem goes away.
97 F-350 XLT CC DRW 4X4 PSD, 285/75-16 Custom bumpers, Gauges-boost/egt/trans, Swamps IDM, 3.5"dp- 4" exh., 3" Body lift, ES bushings/mounts, Built trans, billet conv, B&M pan, Hayden cooler, Adrenaline, stage 2's, IC, H2E, E-fuel
ARP's, 910's, Smith Bros. to come