At 10:42 AM 12/19/2007 -0800, you wrote: >196's don't have the most stable head gaskets as-is, so are we talking O-rings and or possibly copper gaskets to get even 5 lbs of boost to work? I think the bottom end would be the main worry (no pun intended). Those engines were famous for doing the herky-jerky on both rod and main bearings. If you do it, balance, balance, balance. Line bore & blueprint... -- Marc _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list