Oem piston and rod combo

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Dec 1, 2020 | 09:08 AM

shitbox

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From: vegas

Oem piston and rod combo

Currently i have a bone stock pre-03 lq4 (press fit first gen rods) and it has metallic in the oil. Engine still runs great but i dont want to risk it shooting a rod through the block, so its time for a rebuild.

the car is boosted and makes 500hp, however, i want more. I want to upgrade to the floating rods (i have a set from a 5.3 sitting here) but i do not know if the oem lq4 pistons have the circlip groove in them. I want to know before i tear it apart.

does anybody know if the pre 03 pistons have the circlip groove cut out?

if they do will it be a direct swap? (aside from getting the rotating assembly balanced)

thanks!

Dec 1, 2020 | 12:46 PM

jarheadl34

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Why not just buy new flat top take out or replacement pistons and rings, they are cheap these days and will work with your gen 4 rods and give a boost in compression.
Jarhead

Dec 1, 2020 | 12:53 PM

shitbox

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From: vegas

Dont you want lower compression under boosted applications?

Dec 1, 2020 | 03:47 PM

LS1 TJ

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I would go out and buy new forged pistons and I or H beam rods since you may turn up the boost.
I've used Mahle and Diamond pistons along with Eagle and Scat H beam rods with good results.

Dec 1, 2020 | 04:03 PM

1FastBrick

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From: JunkYard

Quote:

Originally Posted by shitbox

Currently i have a bone stock pre-03 lq4 (press fit first gen rods) and it has metallic in the oil. Engine still runs great but i dont want to risk it shooting a rod through the block, so its time for a rebuild.

the car is boosted and makes 500hp, however, i want more. I want to upgrade to the floating rods (i have a set from a 5.3 sitting here) but i do not know if the oem lq4 pistons have the circlip groove in them. I want to know before i tear it apart.

does anybody know if the pre 03 pistons have the circlip groove cut out?

if they do will it be a direct swap? (aside from getting the rotating assembly balanced)

thanks!

No, they do not.