you can def reach 300hp on ur ls, but def wont last as long as u want it too. i gota 94 ls stock, with a t3 turbo running 12psi daily, and its real quick but nowhere to 300hp, mayb like 230 or something, but even i dont think my motor will last night. good luch though

 

When you guys say stock, do you mean 300whp with a completely stock block, no lowering compression?

 

that would mean stock, in order to lower compression you would need lower compression pistons. 300hp on completly stock motor is possible, ask xenocron

 

I have seen 292 hp on a stock Ls but it had arp rod bolts , t3/t4 57/60 trim some ---- with 12 psi
SFP manifold 3 in exhaust no cat 650 injectors it was tuned on uberdata

 

i ahve seen more than a couple push over 300 even 332 and still have not heard of it blowing,,theres 3 cars here that all are pushing 290-330hp on stock ls motors and only one lhas let go that i know of

 

if you get a real good tune on that bitch, and don't constantly beat the **** out of it, it might last ya awhile. i'd suggest running a lower boost setting daily, then just turning it up on the weekends or whenever your going to race

 

getting 300whp on a stock block isnt the problem, its difficult but doable. its keeping your engine running after your ringlands break. i would seriously look into forged pistons if you REALLY want to run this type of power level for ANY amount of time.

 

dammm i cant even get a stock motor to last a year na. it seems my turbo motors last longer than the na ones. the thing u will probubly change first is ur pistons and when u have to do that through some forged pistons in with some eagle rods and than it should last a year.

 

i have 2 friends that has a b16 with 330whp and a ls 301whp both stock and its last them over a year, they tuned the same time and i personally think its all in the tuning, even tho they are running that much i wouldnt do it like hotrex said thats pushing it but hey its your motor and your money. YOU GOTTA PAY TO PLAY.

 

I've got a friend with a ~300whp stock B18b whose been running for ~2yrs and beating the **** out of it on a daily basis.