I was wondering if 1.6 roller rockers on a Lt1 would require cpu tuning and what kind of gains could be expected? also, what about a mild comp cam like a 305, they say it doesn't require tuning, is this true? Thanks.

 

to take full advantage of a new camshaft or ever higher ratio rockers, you'll need to do some tuning, your looking at it the wrong way, don't try to look for modifications you can do that will side step tuning. Tuning isn't all that hard to do yourself, it isn't a black art. And investing in something like LT1 edit could prove very usefull in the future.