jamesdem1123

Hello,

I just purchased a LS7 slave from oreilly's for my clutch install. Will I need the longer ls7 slave or the stock slave when installing with a ls2 flywheel and ls7 clutch? I noticed the ls2 flywheel was a bit thicker.

Thanks

raven154

iTrader: (14)

LS2 flywheel is much thinner than what is in the car stock. The LS2/7 flywheel has a recesed surface but the pressure plate is also built to accommodate this. You will need the LS7 slave for the install.

jamesdem1123

???
I have an LS2 already... I'm bolting an ls7 clutch and flywheel to it. So the LS7 Slave is what I need?

raven154

iTrader: (14)

Sorry for the confusion. The LS2/7 Y-body (corvette) flywheel is much thinner that what you have stock. The V has a dual mass flywheel from the factory and is twice or three times thicker than a standard flywheel. Really dumbass design if you ask me.

The corvette and the V share the same bell housing design in that the distance from the back of the crank to the transmission is the same. So basically any combination that works in a vette will work in the V. So, Y-body clutch and flywheel = Y-body slave as well.

So to make a long story short, use the LS7 slave with the LS7 clutch lol

jamesdem1123

So with the dual mass (resurfaced) and LS7 clutch/pp, I would use the CTS V Slave?

Trying to get a ls7 flywheel now instead of the dual mass.

raven154

iTrader: (14)

That is correct but I would definetly get rid of that dual mass flywheel. They have been known to fail and cause vibrations. The lighter flywheel will rev much faster and you won't lose any drivability. Make the car a lot more fun to drive.

01_SuperSlow

iTrader: (7)

As far as I know, the ls7 clutch can only be used with a recessed flywheel like the ls7 and ls2.
So you can eliminate using the dual mass. Plus, why would you want to do that?
The biggest benefit by far about a clutch swap is getting rid of that turd.

jamesdem1123

Thanks for the help guys!

I just got my V a few weeks ago and I have barely driven it since its home and I'm off at school (Christmas break cant come soon enough! Then I get to keep it!).

I wish I would've known about the dual mass issue before. I spent $290 on a ls7 clutch/pp, then $98 on the slave, then $45 on the bleeder, and now another $230 on a F1 lightweight fly! I could've gotten a complete aftermarket set up for that much

At least between the Amsoil fluids, Katech shifter, CS bushings, lightweight fly, and ls7 clutch/slave, the transmission should be a little more enjoyable to drive. That thing is wretched! especially getting into reverse.

01_SuperSlow

iTrader: (7)

Oh trust me, it'll feel like a whole new car. And if you haven't done motor mounts yet, I highly recommend you do that next.

raven154

iTrader: (14)

I'm not defending the dual mass flywheel in any way, but the stock flywheel is a recessed flywheel just like the LS2/7. The same parts can be bolted to it, the main issue is the sprung hub of the LS7 Vs the unsprung hub of the V. The dual mass has a sprung flywheel so the need for the spung disc goes away. Just wonder how a sprung disc and a sprung flywheel would work together.

In any regard, do not reinstall that dual mass turd! Lol

jamesdem1123

Went with this guy.

etcts-v

^^ what's the weight on that flywheel?

$663 is good, I got my 17 pound Aluminum Ram flywheel, LS7 clutch & Pressure Plate w/ ARP bolts from Scoggin Dickey for $579 then another $98 for slave and $50 for the remote bleeder so I actually paid about $725. The monster kit's start in the $800 range I believe.



By the way I noticed in your signature that you are installing a Descreened MAF, just my 2 cents I would stay away from messing with the MAF sensor unless you are going aftermarket. The risk of bad air metering for very little if any gain isn't worth it.

jamesdem1123

The weight is 20.4 pounds on a chromoly steel flywheel. just search ebay for either F1 or PPC 6.0 flywheel and it should come up.

I will probably be skipping the MAF and injectors for now. I will be installing the parts starting on Dec 21 and by the time I will be done, all the tuning shops will be closed so I will be running a mail order tune. Maybe I'll descreen it if I can get a dyno tune in sometime.