what 4.3 motor has the most h.p

i have a 93 chevy s10 4x4 with a 4.3 t.b.i. the motor is junk.
im going to buy a used motor from a salvage yard.what 4.3 motor has the most rated horsepower that will work in my truck.
thanks joe o'bryan

probibly best bet is to do the same moter you have, switching moters means switching (in your truck) fuel pump, moter, and pcm... a tb only has like 5 psi for pressure, while the more powerful moters require atleast 60 psi, and atleast 50 to run at all... the swap would be ungodly costly for you and best off doing a 350 or a tbi 4.3l

what 4.3 tbi has the most horse power

they should all be about the same... the differences if any are going to be less then 10 horses

Why not look into just getting your preset motor re-built, and get a performance cam installed. Then you'll have good power and a new motor