" From: Tom Jennings <tomj@xxxxxxx> " " Ooh ooh if they're flat topped then they raise 232 compression about one " point. Nice. nb. -late- 199 slugs are flattops, with the '68-up 66cc head. earlier ones had a dish to work with the smaller 56cc head. high-compression 290 slugs are also flattops, with eyebrows for valve clearance, but i believe they're a bit taller - maybe too much to work in a six, if you can even find them. sealed power used to have forgings for them too. ________________________________________________________________________ Andrew Hay the genius nature internet rambler is to see what all have seen adh@xxxxxxxxxxxxxxxxx and think what none thought