Quote from: R.O.R-2.0 on April 08, 2011, 08:16:07 amthese are 1st over size..2nd oversize is +1mmThe OP is correct. Those are 2nd oversize. 1st oversize is .010" over or 76.73(4,5). R.O.R. you are also kinda sorta correct as the .010" oversize pistons are not available as far as I know. It is my understanding that they were used for early factory "remanufactured" engines and presumably used to correct flaws in the original engine manufacture that were minor enough to correct by boring slightly larger.
these are 1st over size..2nd oversize is +1mm
how much for the td block? with pistons and squirters?