I am considering my options here....

i am leaning towards building a Forced Induction LT1 with the STS turbo switchable between 5 and 15psi.

Question: is boost bad for a brand new engine? should i break the engine in before i add the turbo? or should i set it up to run the way it is going to be run.

 

Just run low boost at first... Im no expert on breaking motors in or anything. But this is what i have generaly seen.

 

You want to give the rings adequate time to seat and an N/A condition is the most ideal condition for break in. So my advice is to stay out of the boost as much as possible for the first 3-400 miles.

 

I drove my basically new 383 LT1 for about 450 miles before it saw 15#'s of boost on the dyno. Everything seemed to work fine for me, but I would agree to drive it a bit with no boost for about 500 miles before opening it up. just my opinion though, I am no expert.

 

I herd that running small amounts of boost is good for the ring seating. I've got my new motor set at 4-5 psi right now for the break in period boosting occasionally. Is there any reason that I shouldn't be doing this???