spun bearing??440 vibration

[mopower04]

what happens to an engine when you spin a bearing? i'm curious i took my truck out the other weekend to show my friend what a beast it is. let it warm up to temp before i left my driveway, took it out and gave it, no big deal. mind you 440, 727,203tcase=all time 4x4. 4.10 gears and 37in tires. came to a stop sign in the county turned right and just let er rip! all 4 tires slid us sideways across the road, and the monster never slowed up! gathered things up and kept goin down the road and noticed a vibration. i've thrown front driveshafts before and figured that was it. driveshaft appears to be fine......start up the truck in my yard now idles great, moves, etc. rpms up over 3000 and i feel a vibration and it sounds different that usual just sitting in the yard. i'm afraid to drive it again without figuring out what may have happend......any ideas where to start?

[mopar29mod]

when you let er rip what did it rip to rpm wise? normally a spun bearing will give some other signs like low oil pressure, knocking and maybe some smoke. Take a look at the vibration damper to make sure it has not sliped or lost the inertia ring and might look at the tranmission for anything out of place.

[mopower04]

i'm crossing my fingers for trans problems. lol dont know what rpm it was goin but i dont recall a shift light its set at 5500. i will look at the balancer but i belive it is a one piece balancer from huges engines. what other than the converter or flexplate could be out of place in the trans thou? as far as engine, no oil pressure issues, no smoke or noise, sounds great was just curious to make sure. i'm confident its not internal in the motor at least!

[cudabob496]

bent pushrod?
time to pull the valvecovers

[aarracer]

loose or cracked flexplate?

[mopower04]

i hope to get at it this weekend but i am wondering about the flexplate. and i've been wanting to pull the valvecovers to swap springs for a while now so this may be my excuse.