how many PSI should a run and on a 95 LS. i'm planing on putting in nrw rings in the spring. what do you think. i'm using an T25 turbo for the spoolin

 

stock ls will hold 300whp tunned, its not about the psi its the power ur motor is putting out, a t25 is a baby u'll really need to crank the boost up to make power on that turbo.

 

4000psi

 

well first off, do a compression, and leakdown test on the motor and see what kind of shape it is in.

after you find out if it is healthy, start worrying about engine management if you are worried about it lasting.

if all goes well base it on a horsepower goal and not so much a psi goal.

just my opinion, hope it helps

 

get a good stand alone dont run a piggy back and make sure that you have a good tune and go from there make sure that your not leaning out I run 14psi on my bone stock LS and have had no problems with it but I just make sure that the car is running on the rich side but Ive run as much as 18 on the motor wiht no problems