Originally Posted by Däs Schmoo
Guys running 500 whp with a good tune on stock sleeves don't worry about sleeve movement because it is so incredibly minimal. It isn't enough to crack a sleeve.
any sleeve movment is horrible. If it doesn't crack the sleeve, it will wear the head gasket down because the head isn't going to move with the sleeves and it's going to cause it to rub & eventually fail.
Block Guard FTW!
or say enough & sleeve the block! even better!
very good discussion
