Shanna

getting ready to do a ls3 h/c/i with a turbo in my c5 z06. i was just wanting to know how far i could push it and be safe, if i could make over 700 whp i would be fine with it or should i change the pistons and rods or what, and i am only working with 10 k, so what can i do i can get a ls3 used for 2500, and i have a shop the will do the turbo kit for me for 4500 so i have 3000 to play with but need fuel stuff to

litle88

iTrader: (20)

Her is a link I thought might help see post #2

https://ls1tech.com/forums/generatio...q9-handle.html

Shanna

but i hear that the ls3 is even stronger and comes with a forged crank, is that true

Floorman279

iTrader: (11)

dont believe there is any difference........700 rwhp with a turbo is goona be easier on it than 700 rwhp na, which people have done..........personally, id say you should be ok,

Shanna

i should have enough fuel i got some 80lb injectors and some other stuff two 255 intank fuel pumps. just want to be safe, if i dont do the turbo i can fordge the motor and do the turbo in a couple months., butt if the ls3 can make 700 on boost i would reather just go that way, so i can go ahead and put in a strong rearend

Shanna

i wish some guys could post up some numbers on there stock bottom ends, they done it for the ls1s maybe they will make a sticky for the ls3s

COPO9560

What happened to your original LS6? You could add forged rods & pistons and get the heads ported for $2500 - with a turbo easily get your 700 hp.

Nothing wrong with going LS3 but for 700 hp, forged pistons would let me sleep at night not wondering when it would blow. I would go forged pistons and rods in the LS3, stock crank. You won't need ported heads or intake to make 700 with a good turbo, invest in the bottom end, it is a lot easier to upgrade the top end later in search of more power.

Shanna

it laid down on me, i plan on building the ls3 later on this summer going for the 1200 range after that

litle88

iTrader: (20)

The crank has been known to hold 1k hp with other members and vendors here. That will be the least of your worries. Since its not in the car just save yourself headaches and having to dish out more money later. Just get a good set of Hbeam rods and some boost pistons and you'll be set. Do it once and do it right. Just my .2

blake b

iTrader: (11)

That is exactly what I did. I reused my stock ls3 crank but used forged pistons and rods in anticipation of supercharging.

Shanna

so the stock crank is good just change everything else, i can live with that

NemeSS

iTrader: (127)

Crank will hold with correct preparation.
If your goal is 1200,u may have to upgrade to forged crank. Stock ls3 crank is not forged.
But 700rw is no problem on stock crank.
I have a build going on 7yrs on stock crank, hbeam rods and forged pistons and stock lq4 crank. 650 rw, but has seen 700 many times.
Of course assume correct preparation,assembly and quality parts.