[rotorwrench]

Blocks can and should be be pressure tested at overhaul. Magnaflux usually finds a crack that the naked eye can already see. Dye pen inspection is better than magnaflux in my book but it still won't find cracks in the siamese exhaust ports. If your head bolts can be retorqued, try that as was mentioned. Bar's leaks is definitely worth a try on an engine that is a light leaker. Oil pans full of milkshake is not a light leaker. Sodium silicate or water glass will fill the small stuff. Make sure your radiator doesn't need a rodding out.