3.4liter engine needs fixed
 

i have a 3.4 liter engine in a 91 cutlass that i loaned to a friend,bad idea, twenty miles from home two of the three rear spark plugs popped out and they kept on driving it dumping gas down the cylinders with no spark. so far i have the crank rebuilt and new main bearings next is rod bearings and rings. what is the standard size rings? then comes the fun part the cam followers and heads just buying parts is not cheap and neither is the machine labor.:(

did i say something wrong? nobody likes to answer my questions.