forged lt1
It would be best to talk to the piston maufacturer and the engine builder to get their suggestion on safe limits of the parts.
As far as the block itself...there is no issue with a 300 shot.
The engine has to be purpose built and your builder would know best on what's a safe amount of N20 to use.
100-150 should be no issues, but as large as 300 if the pistons are not nitrous ready or ring gaps are too tight can have you rebuilding again quickly.


