ZR1 LS9 Flywheel

[LXSS350]

Anyone know an accurate pedestal mounting height for the OEM LS9 Flywheel as measured from the flywheels clutch plate face? Running the ZR1 OEM clutch kit and I am machining up a 6061 T6 flywheel for a non chev/gm engine.

[LXSS350]

Now sorted.

FYI for those who are looking at doing an LS9/LS/LSX/LSA/ and even the new LT1 (gen5) conversion and want to use the excellent oem ZF-Sachs twin-plate clutch kit from the C6 ZR1 - some good news. I talked to Dan @ Fidanza and they will be offering a 6061 T6 Aluminum Flywheel in 6 bolt, 8 bolt and 9 bolt versions for the multitude of common GM engine swaps.

[andrewb70]

Now sorted.

FYI for those who are looking at doing an LS9/LS/LSX/LSA/ and even the new LT1 (gen5) conversion and want to use the excellent oem ZF-Sachs twin-plate clutch kit from the C6 ZR1 - some good news. I talked to Dan @ Fidanza and they will be offering a 6061 T6 Aluminum Flywheel in 6 bolt, 8 bolt and 9 bolt versions for the multitude of common GM engine swaps.

Any time frame on the Fidanza flywheels?

Andrew

[LXSS350]

Any time frame on the Fidanza flywheels?

Andrew

Doing them now so be in stock by mid Jan.

[cwylie]

Is the CTS-V and ZR1 clutch the same?

[andrewb70]

Is the CTS-V and ZR1 clutch the same?

No. They are both dual disk, but the LSA clutch is smaller in diameter and uses a dual mass flywheel, while the ZR1 uses a single mass flywheel.

Andrew

[LXSS350]

Is the CTS-V and ZR1 clutch the same?

Vastly different the ZR1 is made by ZF-Sachs and can handle around 850ft-lbs.

ZR1
http://image.chevyhiperformance.com/f/10723058/0811chp_25_z+chevrolet_corvette_zr1_ls9_engine_spe cifications+ls9_duel_disc_clutch.jpg

CTS-V
http://i1204.photobucket.com/albums/bb407/HPIcustoms/IMG_9591_zps31d50dc2.jpg

[cwylie]

Any info on when the Fadanza flywheel will be available?

[cwylie]

So they are only selling the flywheel through Katech which wants $850 bucks for it.

[LXSS350]

No nothing to do with Katech or $850.

I don't have the part numbers off the top of my head but they are selling them via their dealers and website. Best to give Dan Jenkins at Fidanza a call on 440-259-5656 ext. 102

They are doing a run of them now.

[LXSS350]

Just a follow-up for those who are interested the LSX/A conversion flywheels. They are now in stock at Fidanza.

The part number to order and weight information for the new aluminum flywheel is as follows:

Fidanza part number - 198891 - LSX/A conversion to ZR1 twin disc

PRODUCT weight is 11.70 lbs

Product photos:

[cwylie]

Is there a 6 bolt version?

[LXSS350]

Is there a 6 bolt version?

Yes they where doing a 6 bolt + 9 bolt version as well as a version using this oem zr1 clutch for the new LT engine conversions. I don't know the part numbers as I have an 8 bolt LSX engine. The weight would be the same.

[LXSS350]

Using a spacer is one solution. I also saw a build on V8TV where they replaced the Magnum front plate with a bellhousing frof the CTSV TR6060. The CTSV has the front transmission plate integrated with the bellhousing and this gives the necessary spacing for the ZR1 clutch.

Andrew


ACDelco 19206204
GM Original Equipment Manual Transmission Clutch Housing CTSV

http://ecx.images-amazon.com/images/I/81%2B3qcaNCSL._SL1500_.jpg

http://ecx.images-amazon.com/images/I/81wUa4CuZ-L._SL1500_.jpg


For diy magnum and twin plate clutch set-up's unless you pay big dollars for a system from a vendor there is almost no real accurate info on custom fitouts. . The only deep LS bellhousings for typical set-ups are this one for the CTSV/Z28/ZL1, or the RM6038 from quicktime if you need a SFI Certified housing.

For a clutch system with decent 850ftlb capability and OEM drivability I find you cant go past the oem C6 ZR1 Sachs unit combined with the Fidanza flywheel and the OEM ZR1 slave. Its a total spend of $1200 then add the CTSV/Z28/ZL1 bell for $300 delivered. That's all pretty good value in my book. So for under $4500 for a complete new system with the great magnum box your off and tearing up the track.