Few questions with FG Turbo transmissions, diff & tailshaft

[JLETTERS]

Hi All, I am in the process of doing my FG NA+T build, (I wont be installing, a mate will be doing all the work)

I have gone for a gas build and have my motor back from the engine builders (Oil pump gears, timing chain, valve springs, head studs and full recondition/rebuild)

Only thing I need to worry for now is the transmission. It still has the standard NA ZF6.

Seeing power figure people have made with the gas motor and those modifications. I would assume 350kw would be very easy to achieve with the GT3582 (Ported 39mm gate, 4 inch dump) 1000cc injectors, upgraded walbro fuel pump and Plazmamans 700hp inter cooler. 

What sort of power can the FG NA ZF6 handle? keep in mind it is regularly serviced but does have 200,000km on it.

My next question is, if I go for a turbo ZF6, will I need to get a tail shaft? before starting this build I recently just had a brand new serviceable one put in and losing that would be annoying.

And if I do have to get a new tail shaft will I also need to get a new diff?.

 

My last question is, did NA FG's have factory LSD diffs fitted? reason for this is when I have the car jacked up and turn a wheel, the other wheel spins in the same direction but the sticker on the diff says STD (standard I assume)

 

Apologies for all the questions as I'm sure some of these have obvious answers

[k31th]

There's no way your N/A ZF is going to handle 350kW at the wheels, neither will your N/A power-handling tailshaft. If you've "upgraded" the tailshaft, then it might have enough power-handling but it's an unknown and based on how you spec'd it when you purchased it.

 

I'm not sure if you need to change the tailshaft between an N/A ZF and a Turbo ZF, but I would think not... just measure the distance from the gearbox outlet to the diff and see if it's the same length.

 

Most factory N/A's didn't have an LSD, but it could have been optioned from the dealer. Good that it has one as it'll handle your upgraded drivetrain better than an open diff.