[gtobird]

I've had several cars with 68 engines and the original 68 style water pump & timing case. Many years ago I had a severe overheating problem on a fresh rebuild. I tried all of the usual backyarder stuff and nothing seemed to work. Then one day I found out about the need to space the divider plates properly that reside in back of the water pump. You may already be well ahead of my knowledge, but this is just a reminder not to forget that and at least for me, I found that pairing those plates using an original style water pump with the cast impeller helped a lot.

Old joe