I have a 3.1L V6 in my car, i am going to either out a TPI engine, LT1 enigne, OR an LS1 sengine in my car, now i know that the TPI engine is the easiest swap, and that is what i plan on doing, but whats the horsepower difference between the 3 engines? thanks

 

Stock TPI no more than 235 hp, stock LT1 no more than like 275hp, stock ls1 i think the new ones are at about 345hp (just a side note, ls1's get about 30mpg on the freeway if that makes any difference to you)

 

Of course if your thinking about an ls1 which is from 320 > 345hp then you might as well go with the Ls6 385hp

 

Yea, i hear what u are saying, but i want a swap that is pretty easy, thats why i want to do the TPI engine, o, and i also want to retain emmissions, but i guess that a LS1 would be emmissions legal but the LS1 is also alot more than a TPI engine.