Hello,

Have made this question to some tuning gurus..lol, but just get different opinions, one side says LNF but LDK is a downgrade.. others goes for LDK as stronger for tuning..

According specs the LDK comes with powder metal rods instead forged rods, some say those rods are enough strong up to 500BHP, some say are way weaker than forged rods..

So, Which engine is stronger for tuning ? LNF or LDK ?

 

LDK is rated for more power stock, supposedly up to 500hp.

 

I'd rather have an LDK gen 3 block and stronger internals.

 

High hp buids are moving to the gen3 blocks look into those taintedred07 up there did
I thought the ldk was gen2???

 

LDK is Gen 3
GM ACDelco - Complete LDK Engine #

 

LDK has really good price here, $ 1312 for a brand new LDK : http://allworldautomotive.com/auto_p..._ots34855.html

The stock LDK does have stronger internals ?

 

Gen 3 and yea i got a steal from mongo, have yet to put it in though still waiting on funds for other parts ect.

A complete LDK with turbo and everything is 3k

 

Yes an ldk is the newer engine and has gen 3 block and forged internals just like lnf, except nither have forged pistons. Ldk can hold more power stock cause of the stronger block. It is an upgrade from lnf. In fact u can't really get lnf block anymore. That's gen 2. As far as I know anyway. So yes ull want an ldk. Zzp has whole engine with turbo and everything for 3k

 

Yep, I have one in my car. LDK/ZFR combo.

 

Do you have the LDK with the ZZP EFR ?
How much power did you get ? Stock internals ?
I read LDK needs a bigger MAF when going over 400BHP

 

Where are u reading these things? The ldk is pretty much the exact same engine with a few minor differences, and if it's in the cobalt it will have the lnf head on it most likely. Wherever ur getting ur info about these engines, stop. Cause it would seem they don't quite know what they are talking about.

 

LDK is definitely the better motor but at the same time it's still not truly forged and with just pistons and rods it's very strong.

 

I made 458 at 25 psi lol.

 

Would love to know about this then. Dyno sheet, mods?

 

im struggling to make over 410whp on E85 with my LHU... what are your mods? did ZZP give you a new map or HPFP. I keep creeping past 28 lbs and hitting cut off.

 

i would say major changes.....

mods? gas? rpm? dyno sheet for sure.

 

^^^ kind of what I was thinking. I'd love to see something or that.

 

Maybe the head but not that major in the block. Not compared to the ats motor which I can't remember the name of. Wish we could put that on the cobalt

 

Do you mean the LTG ? But seems that one also has powder metal rods instead forged rods.

 

I think that's it. ill go see.

 

forged powdered metal.

 

Well, LDK/ZFR, Stage 2 4.45 Trans, OTTP Charge piping, Stage 1 cams with larger fuel lobe, ZZP Exhaust, MPx Downpipe, Treadstone TR12 Intercooler, Hahn Intake, E47, HPTuners.

 

still want a dyno sheet and rpm... not saying it didnt make the power because i know it can happen but would like to see the graphs

 

the block is totally different.... the only thing that maybe isnt a major change is the head bolt pattern and accesory bolt pattern.... sand casted block that has a whole lot less reliefs in it compared to the lnf, its a closed deck, it has less oil journals. those are major changes in my eyes.

 

The LDK is quite new in Europe, has been there for almost two years only.
Rods are GM part Nr. 12638832, same rods than Cobalt 2.0T

I want to upgrade the turbo on my LDK and want to reach 340WHP with 93 fuel, is not that much but my tuner friend in Europe told me that first will need to replace rods by forged ones otherwise my engine will blow.

So told him "..but in USA they are very advanced on LNF tuning and been able to get more than 340WHP from the stock LDK.." but he tolds me in USA they dont speed up their cars as we do on Autobahn for long rides or don't take them to the track day, that's why they don´t blow up their cars.

So now I'm very confused about to upgrade my turbo to get 340WHP.
Please your comments.

Thank You.