Denny, I've done an in-the-frame leak check that doesn't involve a teardown to locate, or at least confirm the presence of a leak on some of my race engines. They're prone to develop pinhole leaks in cylinder walls that get bored way oversize due to casting flaws, and they don't show up until they've been run hard for awhile.

Disconnect and plug off both radiator hose nipples with expanding rubber freeze plugs, and figure out a way to plug one heater hose connection, usually with a threaded-in pipe plug. Adapt the other heater hose connection to a garden hose, and turn city water pressure into the block/head assembly. Leave it pressurized for several hours. A seep leak will either fill up a cylinder, or show a leak into the crankcase after sitting awhile. Id this procedure doesn't show an exact location for the leak, at least it will point you in the right general direction.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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