[L78toLT1]

Originally Posted by SJFGTO

No reason to tune unless you go beyond the pure bolt on mods such as a cat back, CAI and a ported TB. Once you add headers and a pulley, port the supercharger, add a larger TB, etc, then a tune makes sense. The quality and reliability of a tuned LT4 depends on the tuner. The engine itself is stout.

This^ If you don't lose an oil pump, which in all likelihood you won't, your LT4 should prove to be absolutely bulletproof at your power level, which is slightly more than the op was looking for.
With the exception of the occasional oil pump, I have never heard of an LT4 failure at any sane power level. It would just suck to be the guy who lost a motor due to a pump with minor mods and a tune.