I know baout the manifolds...I have a equal length manifold from full-race...but iv asked stores around and ppl they say that the LS motor tops will be able to push 250-280 tops...thats with about 8-10 psi plus i only have a T3 turbo good for 300whp...so wat im asking is that will a stock LS with stock internals other than computer be alble to hold 300 whp..???

 

uhhh yeah

 

https://honda-tech.com/zerothread?id=1323059

most of these arent stock but it gives you an idea of what the ls can do. for the most part stock ls motors arent making 300whp on stock internals. its definitely possible but usually needs a big turbo and fairly high boost.

and you arent going to make 300whp on a t3 turbo regardless of what motor its on. it may be capable of 300hp but it will take extreme psi and probably be way out of its effciency by then.