454 LINE BORE ,,,,HELP ZIP
 

FRIEND OF MINE IS RUNNING A 454, DROPPED A VALVE AND TOOK OUT ONE PISTON AND ONE CYLINDER, HAD A SLEEVE PUT IN, AND PUT IT BACK TOGETHER.. MADE IT ABOUT 50 MILES AND TORE THE BEARINGS UP, TOOK BACK TO THE MCHINE SHOP AND THEY SAID THE LINE BORE WAS OFF NOW.. ENGINE RAN GREAT BEFORE DROPPED A VALVE, IS IT POSSIBLE FOR THE LINE BORE TO BE OFF NOW... IF SO HOW COULD THE LINE BORE CHANGE.. THANKS

It's very possibly, especially if it was a wet sleeve, where they may have heated the block and froze the sleeve to install it, it could have shifted the main bearing webs of the block.

JMO

Zip.

THANKS ALOT ZIP,, OUR MACHINEST IS A STAND UP GUY BUT I NEVER HEARD OF THIS BEFORE AND WANTED A SECOND OPINION,, IT COSTED MY FRIEND 580.00 TO GET IT BACK GOING AND DIDNT GET CHARGED ANY LABOR. RUNS GOOD NOW AND HOLDS GOOD OIL PRESSURE, THANKS