My friend had a sleeved 340 in an 11 second Cuda . It let go , wiped the crank and 2 rods, scuffed a piston . sleeves are ok for street but not for serious efforts IMO
Every aluminum block has 8 sleeves. I have set hundreds of sleeves. Never a failure. Would you throw away a block that you have thousands invested in over a sleeve?
From the OP it seemed like he had a 340 that was .055 over. Another .005 won't kill it. Unless it won't clean up with .005. Maybe then he can sonic test it and go 4.105 or 4.110 if he can find rings.
