Well mine for one, did 2 seasons no probs, even turned 7300rpm with N20 and no issues but didn't fancy doing that too many times, the motor sang a bit top end if you know what I mean....... Also I had enough PTV clearance with those slugs (900gms) with that .650/[email protected] solid and fel-pro blues, didn't have to cut the pistons, we didn't measure the heights though. My old 1968 Block is still running today 25yrs after in an Anglia with a smaller cam of course...did have external oiling.
