Some things in life and motor building you do not want to buy the cheaper ones out there, like choosing a brain surgeons  Either buy a good one now or take your block to a shop who has a good one and pay them each time you need them to do your blocks  If the OP is in the same situation I was, I had trouble finding a shop that had one! I thought w/ all the shops around here that surely I could fine one easily, but it took longer than I thought. I called PAR, Gene Fulton, Honeycutt's, and several others before I found one place about 2 hours away. All he used it for was checking some of the stock cast heads for round track engines, lol. I was having a World Hemi block checked out to make sure there was no problem going to 4.5" bore.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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