The final word on retrofitting the '09 differential

[heavymetals]

Should be "subscribed and supporting member".

I look at the replacement gas tank as an opportunity to:

1. Hold more fuel.

2. Access and replacement of the fuel pump (something bigger or stronger for maggie guys)

Bang for the buck, this mod sounds like it will address the major complaint and with "factory parts".

Relatively cheap.

[lonestranger]

As the others had already said - You (and Luke) get a great big ATTABOY for attacking this issue so doggedly. (Just remember though, that one AW Shit, wipes out a thousand ATTABOYS!! Seriously, great job; of course you're not done yet, don't ya know!! I think Luke"s idea of custom axles is the way to go, as it obviously allows us to use the wheels, brakes and hubs we have (save money for more go-fast goodies) and would also allow possibly upgrading the u-joints on the half shafts even further.(just in case a LS-7 w/122 maggie showed up at the gun fight, don't ya know!!

[bpm]

bump

[Twitch]

Anybody have a ballpark figure yet?

[heavymetals]

If you peruse back a few pages, I think it was hovering between $5k-6k but they are still working on the parts list.

I don't expect it to run much more then a maggie (installed).

What I expect to add up is changing the front hubs to a five bolt to match (if we end up having to) and if that is the case, rims and different tires.

The magnetic suspension would be a neat trick to (I wish). I bet that has a lot to do with the elimination of wheel hop. Just "lock it up" and ride the throttle.

[StealthV]

Seems the shocks are doable. They don't need to be integrated with the chassis controller for V1. Simply flip the "launch" mode toggle switch on the dash. Just need to figure out the trigger signal voltage. And that part is easy with a service manual.

The '09 update is the classic cost/value trade off. And yet another opportunity for GM Performance Parts to offer a factory blessed, DIY weekend bolt-on kit.

[heavymetals]

Yeah I look forward to them dropping the ball on this to.

Originally Posted by StealthV

Seems the shocks are doable. They don't need to be integrated with the chassis controller for V1. Simply flip the "launch" mode toggle switch on the dash. Just need to figure out the trigger signal voltage. And that part is easy with a service manual.

The '09 update is the classic cost/value trade off. And yet another opportunity for GM Performance Parts to offer a factory blessed, DIY weekend bolt-on kit.

[lollygagger8]

Bet those magnetic ones will be a pretty penny!

[NormV]

The C5 corvette(and C6 as they are using stronger C5 axles) uses the same number of splines as the V on the outer or hub side . This allowed me to bolt up C5 hubs on my V along with BMW wheels. The axle shaft diameter is identical between the C5 & V. Not sure about the number of splines into the diff.


Norm

[StealthV]

Just went and snapped a photo. If my count is right (where I my bifocals?) it's a 27-spline on the diff side.

Ja, ja, but what's the diameter?

The battery is dead in the calipers and I'm not digging out the old school version tonight (see bifocal note above).

[dvd_supercaddy]

Any Updates? This is a huge and important thread

[UnsafeAtAnySpd]

Anything new on this?

[Cadillac Tony]

Luke and I spoke just the other day. I'm getting two CTS-Vs tomorrow (2009 models), at which time I'll be snooping around underneath them during the PDI process and comparing the length of the driveshaft and bolt pattern on the flange that bolts to the rear with a Gen.1 CTS to see if that's reusable.

As discussed earlier, the parts that will absolutely be necessary for this to be "bolt on" are the fuel tank, rear cradle, diff itself, new axles and a modification to the upper spring mounts for the rear. The driveshaft is still a question mark, and having custom axles made will definitely be the way to go (as opposed to replacing the hubs/rotors/wheels for the 09 parts).

I'll update here tomorrow.

[smoothq]

Originally Posted by Cadillac Tony

Luke and I spoke just the other day. I'm getting two CTS-Vs tomorrow (2009 models), at which time I'll be snooping around underneath them during the PDI process and comparing the length of the driveshaft and bolt pattern on the flange that bolts to the rear with a Gen.1 CTS to see if that's reusable.

As discussed earlier, the parts that will absolutely be necessary for this to be "bolt on" are the fuel tank, rear cradle, diff itself, new axles and a modification to the upper spring mounts for the rear. The driveshaft is still a question mark, and having custom axles made will definitely be the way to go (as opposed to replacing the hubs/rotors/wheels for the 09 parts).

I'll update here tomorrow.

You and Luke are Da man...

[Naf]

This woud be interestin...I know the new diff has more bolt points for better stability. Versus one that we have now...

It may be worth your while if you are out of warrantee and changin diffs quicker then you change clothes...