[Keithc8]

We do 8 sleeve blocks for 600.00, this includes the chrome moly HP sleeves, the boring done in our RMC 40 CNC block machining center and then we square deck the block. With our CNC machine the sleeves are put in exactly 45 degrees from the center line of the crankshaft and the camshaft so then the bore are exactly 90 degrees apart. Then since the sleeves area a little smaller than our bore size we can put the bores exactly where they should be. This means each hole is right over the center of the crankshaft and the right bore spacing apart because this is all done to the Ford Blueprint specs. Then you will need to hone with torque plates and line hone the block. Always have the sleeves installed with a full step at the bottem for best support and not to tight or they will crack the deck.
I would have the block sonic checked before I went and put 8 sleeves in. You could also hone the block to the next size and hone pistons. For example if the block is 4.262 which is roughly Ford 427 .030 over you could hone to 4.265 or 4.270 since there are rings available for this size. This would be .033 or .038 over but it does not matter as long as you can get rings and the block cleans up. You would only be taking .0015 to .004 of each side of the cylinder and I do not believe that would be enough to make run hot if it is not now. Thanks and good luck, Keith Craft