I remember reading a thread a long time ago about the detrimental effects of loosing the "squish" area on a cossie head due to over-machined heads etc, and just out of interest, how badly would affect the burn/ combustion chamber shape etc if you used one of those copper head gaskets ( is it vulcan that do them? ) to get back down to the correct compression ratio? Without having the tools to hand to work out CC's of combustion chambers etc, how thick would the headgasket need to be made extra to drop the C/R from say 8.0 to 7.5??

Long studding the 200 block- if the block is long studded in all 10 places, does the water pump have to be modified? I seem to remember reading it somewhere, but it might be complete bollox

Any help with the above mucho appreciated