There's actually a pretty effective way to repair that crack. Thoroughly clean the bearing cap and stop-drill the crack at the upper end with about a 1/16" or 3/32" drill bit, all the way through to the bolt hole. Then V-groove the crack a little with a cutoff wheel in a Dremel tool or a die grinder and braze over it. It might be necessary to line bore the block afterwards, but it will keep the engine from being a boat anchor. A properly-prepared brass repair is just about as strong as the cast iron it's applied to.
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!
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