View Full Version : how strong is the ls3 bottom end

01-28-2012, 11:33 AM
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

01-28-2012, 07:06 PM
sorry wrong section, pls delete, mad new one in right section

01-28-2012, 09:35 PM
Here's a good link to get an idea, no your power goals would not be a good idea for a sbe Ls3.

Minus a gooood shop to assemble and prep the block along with balancing it all.

01-28-2012, 09:40 PM
Or you can just get pistons n rods. Your crank can take all of that abuse. That's the least of your worries.

01-31-2012, 07:43 PM
800hp at 7k but you need to address the stock oil system. Not my opinion but from a shop's in Mich.


I have yet to see a spun rod bearing or failure on a 2001 up rod bolt? Am I missing something here? This interwebs rod bolt stuff is getting out of control. If he was asking about spinning his 98' LS1 that high I would agree though.

With that being said the biggest issue at or above 7000rpm is the factory oiling system.
TJ, tuner for Dave Adkins LSX 63' Impala, 6.95@198.

02-01-2012, 10:36 PM
At around 700hp the heads start lifting so you want to do something with big studs.