So I'm looking to pick up an lq4 here shortly and when i tear it down to go threw it and clean it up, i figured i might as well fix any weak points they might have. A fully built one isn't in the budget yet, but for now I'd like to have some more power..

So does anyone happen to know the weak point of these? I was thinking maybe rod bolts or something along those lines? What all should i change that wont cost me a huge amount.

Im also going to be putting a cam into it before i put it in the truck
..around a 222/224 112 or 114lsa and if possible money wise a set of stage 2 wcch heads...

and id also have a bottle for the track running somwhere around a 75 to 125 wet shot on it.

i know they are pretty stout engines, but they've gotta have a factory weak point to em somewhere.

 

ttt...

 

If you can swing it, I'd ditch the pistons too. What year is the block?

 

i havent found out yet,i have a few to choose from but they are all 04 and newer im almost positive.. and i really dont have the extra cash for pistions.ill do those when i build it fully

 

i guess ill just change all the bolts over and stab it together and hope for the best?

 

Sounds like a waste of time and effort to tear down the short block just to change the rod bolts when a new set of heads and a mild cam with a 125 wet shot is nothing to these LSx motors, so I'd leave it. Either build it up completely or leave it alone, it's that simple. Since you don't have the money to do it the right way now, that makes the decision for you.

 

i would leave it like that just add a bigger cam,springs and pushrods.these motors can take punishment,just my o2

 

if you can get a 05 block with the beefier rods...

 

thats what i was thinking..

 

sure it was the 05 that got the beefier rods. from what i heard, it was all lq9s. would be nice if the 05 lq4s got them