1) what's the difference between LSJ and LNF Flywheels? I know LNF costs 3X as much!
2) can you swap an LSJ flywheel into an LNF clutch KIT (PP/disc and TOB)?
BTW.. I see ZZP sells the LSJ and LNF flywheels for the same $$??? Looks like they're the same??

 

i know that the lsj upgraded clutch is just the lnf stocker..so that tells me they can be swapped. as far as it being the same flywheel or not i cant tell you.

https://www.cobaltss.net/forums/2-0l...erence-150915/
https://www.cobaltss.net/forums/driv...change-236661/


see if these help ya

 

I know someone that put a LNF flywheel and clutch on his LSJ and all he need to get was longer flywheel bolts or clutch bolts I dont remember which bolts he said

 

I have a used LNF flywheel, clutch disc, tob and PP in my LSJ. i bought it instead of the gmpp like said ^ its the same ****.

But do not use a lsj tob with lnf. it will not nls right and the lnf tob is far superior than the lsj.

 

LSJ flywheel is much lighter ronn, LNF is ~45 lbs. I have a slightly surface rusted LNF flywheel in the attic if anyone needs one. Used LNF clutch & slave also with ~20k miles on it.

 

how much does the lsj one weigh? id love a heavier flywheel

 

Not sure, maybe around 20 lbs for the LSJ? Just a guess. Hopefully someone knows.

If I remember right, the LSJ GMPP clutch is an LNF pressure plate with an F40 disc, not an LNF setup.

 

Just replaced my (cracked) LSJ flywheel, yeah its probably 20 to 22 pounds. Love my 8 pound Fidanza

 

Ok..so that's it...the weight difference. I assume they're the same size though.

Thanks.

 

Engine load = turbo boost. The higher load of the LNF flywheel increases combustion pressure, thereby increasing exhaust pressure and turbo spool

 

Good point!

 

and the heavier the flywheel the more low end tq

 

isn't there something different with the dowel pin?

 

You might be thinking of a SPEC PP on the stock FW, the dowel holes have to be bored out to 12mm on the stock FW.