block identification

[David Costello]

are there any markings on a Z20 block to look for to tell whether you have a Z20E or Z20S block? is either stronger than the other?   how far can you safely bore a Z20 block that will be running boost?   Dave --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@datascribe.com.au/ ---------------------------------------------------------------------