s-10
I used to have a long wheelbase s-10 that i put a 350 engine in.It was a street truck.Before i got the problems out of it i busted two bellhousings on it.Before it busted the bellhousings it had a bad vibration in it.The only things that i found was the tip of the bellhousing was touching the firewall and the starter was tight against the frame(very little clearance) and was a stock size starter.I clearanced both areas and i had been running a one piece driveshaft,(it destroyed both of those too) and after the clearancing i went back with the stock two piece driveshaft.After that i had no more vibration and no more problems.I had stock motor mounts and tranny mount.Just giving you something else to look at.This truck ran 13.40s in the 1/4 so it wasn't no big high horsepower deal.