Are the internals in the Gen 3 block different than the ones I currently have in my LSJ? 2005 ion redline.

 

Have you searched it? I would contact ZZP.

 

I tried a quick google search found absolutely nothing.

 

the pistons are D.I. pistons in the gen 3 stuff rods are different also

 

This is not the Gen 3 block section. Please post in the correct place. This is LSJ performance tech, right mrbelvedere?

 

What gen 3 block section? People on this site go out of there way sometimes... I swear.

 

The ZZP Gen 3 LSJ is direct injected?

 

There is no gen 3 lsj.

There is the gen 3 block, which as others have mentioned has direct injection pistons and such. You would need to swap lsj pistons and connecting rods in it.

 

No you don't. Just the reluctor wheel has to be reclocked for the lsj.

 

Why would u run direct injection pistons in a port injection car?

Serious question.

 

actually this post could go here or in the general section

all gen 3 stuff is direct injected the 2.0 d.i. the 2.4 d.i. can go directly into an lsj without changing a thing but I don't know if the d.i. pistons would give a non d.i. engine a weird burn during the combustion process and hurt performance

 

that's right just the reluctor needs retimed but you cant say if the d.i. pistons give an inefficient burn and hurt performance in a non D.I. environment

 

What do you think is currently in my car? Haha

Is it optimum no. But can be used without issue. The stock Gen 3 motor zzp sells have DI pistons in them. ZZP has done countless swaps of this already. Upon testing said it made no difference in the tune or performance going from an LSJ to DI piston.

 

Ok. I was just trying to determine the difference from my internals to the internals that come in zzp's gen 3 block, if there was one.

 

Keep the info coming guys, haha. This is all pretty helpful.

 

I doubt zzp as done a big bunch of indepth testing

 

No you're probably right. But when I talked to Steve on the phone he said they went from an lsj motor done on their dyno to swapping in a gen 3, nothing changed but the motor and it made the same power and no tune issues.

When I first talked to ZZP about this motor Zoomer told me it had JE pistons in it. That's where I thought the extra $500 came into play on their site. Turns out it's because of the reluctor wheel change. Well when I drove an hour and a half to go get my motor only to see DI pistons in it I emailed zzp right there and Steve called me back. Had a good convo with him about doing this swap. At the time in October they had done over 20 already. When I asked about zoomers piston comment I guess he thought I was talking about their forged gen 3.

 

THere is alot of things on this board that make people go "why would you do that". lol

 

I just installed a Gen III in my car due to a cracked block. The reluctor wheel had to be clocked for the LSJ but I am very happy with the motor so far. I think OP may be asking about the strength or the rods/pistons compared to the stock LSJ rods/pistons as well.

 

This is true

 

Exactly what I was asking gibsonj4!

 

Well the block is obviously much stronger than a gen 1. Internals I would say are on par with each other. ZZP says the Gen 3 is good for over 500whp in it's stock form. Guys have pushed the Gen 1 to that also.

 

The shape of the piston and head, the angle and shape of the valves, and the angle of the intake and exhaust runners are all mostly centered around fuel and spark delivery for the most efficient combustion. The swirl characteristics of the airflow determine the optimum placement for the spark. It also determines the optimum location/direction for fuel delivery. Both are extremely different in a DI vs fuel injected engine. You couldn't use the head or piston from a DI engine and get anything close to efficient combustion using conventional fuel injection since the spark and fuel delivery is completely different. Not to mention you would have to plug up the hole in the combustion chamber for the injector.

 

I have explained this several times, yet it goes ignored every time and im told "no your an idiot". The only reason why they get away with it with the gen 3 direct injection blocks is because GM direct injection isnt actually mounted on the block, its at the base of the cylinder head right in-between the intake valves.

 

old news dawg