I feel that if the tune is right it should last some time. That block is very very stout. LS1 doesnt really have any inherant oiling issues. So I would think it should be able to make it a season of racing.
LS1s have been putting down good power NA and with juice for a while. The biggest reason there have been a rash of 1000+ hp turbo cars is mostly due to the release of the Big Stuff 3 engine management. It is designed around the LS1 and is completely ug and play. Uses the stock crank position sensor, drives the VERY good stock coil on plug ignition system, nd even runs the elecron auto tannies if needed. This BS3 setup was made by the Meaney brothers...who basically made every other standalone v8 sytem out there. FAST, Accel, etc. This is there latest design.
Oh...thats another item not needed....you can use the stock ignition too.
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if it's cheap & reliable, it ain't fast, if it's fast & cheap, it ain't reliable, if it's fast & reliable, it ain't cheap