LS Swap - Stronger Clutch options?

[Jackson Hanes]

Hey, im sure there are threads about this.

I bought a LUK clutch but the center section of the clutch has failed. it has 25 miles on the odometer and has already failed...

are there a more heavy duty clutchs, i have a H42 4 speed behind a ~500hp 6.0 ls

 

[charliemeyer007]

I think you need to learn to drive more softly. Clutch is cheap compared to buying/rebuilding: tranny, transfer, pumpkin, axles...
I remember reading like 40 years ago - pick the cheap part to fail

 

[Jackson Hanes]

I think you need to learn to drive more softly. Clutch is cheap compared to buying/rebuilding: tranny, transfer, pumpkin, axles...
I remember reading like 40 years ago - pick the cheap part to fail

I thought it was odd because all the miles on it are just cruising around my lot under 10 mph; so you would just go with the one I had in it?

 

[charliemeyer007]

I don't know what options are around for Chevota - maybe a double plate clutch set up. What did they run in those funny cars back in the day?

https://www.summitracing.com/search/department/transmission-drivetrain/part-type/clutch-kits

 

[Jackson Hanes]

Yeah kind of wondering my options, Im betting there are not many kits that are for 16 spline input count. But if anyone knows of any… don't gatekeep.

 

[Jackson Hanes]

10 spline *

 

[sadam_husain]

we put a homemade twin plate into my FJ75 with a 6.0l, its been in there 15 years and other than being noisier than a normal clutch it's always clamped and held fine, its an fj40 pressure plate and two fj40 discs with a centre floating flywheel. My fj40's got a dual friction centreforce clutch, I really like it but I think a lot of people don't like them

 

[3_puppies]

what failed? rivets? splines?
was it installed correctly?
what flywheel and pressure plate?
all adjustments good?

@Downey have any ideas?

 

[pb4ugo]

I thought it was odd because all the miles on it are just cruising around my lot under 10 mph; so you would just go with the one I had in it?

If that's the case, then it sounds like defective parts or somethings out of alignment or not running true. I've broken a lot of driveline parts and the clutch wasn't one of them. My 1st disc was slipping with a hot sbc, but I corrected that with a different material on the clutch disc. I used the same disc when I went to a BBC.

What bellhousing are you running?

 

[clrussell]

I feel like this clutch shouldn’t have failed. There’s an underlying issue.

 

[matzell]

I think it should have slipped before broke. It is the same 10 spline as most older Chevys. Get a 10" or 11".

 

[Gotta40]

I'd say warranty it and try again. no reason it should have failed that quick without a defect.

 

[peesalot]

Which LUK did you use ? FWIW I run an LUK on a 6.0 LS with stock MC & slave. Give Georg at Valley Hybrids/Cruiser Brothers a call in regards to which LUK is correct for your set up. Did you check the space between throw out and fingers when sitting static ? did it shift properly ? assuming you used stock throw out, fork & slave ?

 

[Augustiron]

I'm using:
AA bellhousing
Ram 1550 flywheel
centerforce 383735 clutch disc
centerforce cf165473s pp
aisin crt-012 slave
Stock 4 speed throw out, arm and pivot
AAF-ALL26112 bronze pilot bushing with AA spacer behind it.
Custom fabbed slave mount
Custom fabbed braided clutch hose

On my 5.3/h42

Just got it going so no longevity reports, but quality products and it works great

 

[Jackson Hanes]

I'm running an advance adapters bell housing, and stock slave and throw out bearing.

I'm going to rule this up to be either an installation issue or manufacturing defect.

 

[Jackson Hanes]

Which LUK did you use ? FWIW I run an LUK on a 6.0 LS with stock MC & slave. Give Georg at Valley Hybrids/Cruiser Brothers a call in regards to which LUK is correct for your set up. Did you check the space between throw out and fingers when sitting static ? did it shift properly ? assuming you used stock throw out, fork & slave ?

I will give them a call, and yes everything shifted buttery smooth.

 

[Wasatch Jay]

Centerforce clutches are pricey, but they have a solid reputation. If LUK doesn't offer you a satisfactory resolution, you might consider a Centerforce.

 

[B y r o n]

Hey, im sure there are threads about this.

I bought a LUK clutch but the center section of the clutch has failed. it has 25 miles on the odometer and has already failed...

are there a more heavy duty clutchs, i have a H42 4 speed behind a ~500hp 6.0 ls

It might help to know exactly which LUK clutch you installed. They make several kits and support Corvettes with LS7's that produce 505 HP. It might also help if you have any pictures of how the center section failed.

 

[Downey]

Since I no longer make the Downey chevota specific heavy duty clutches that take less throw out bearing travel to disengage ( stock Chevy clutches take more travel than the Landcruiser hydraulics produce, at the throw out bearing). My cost to produce went crazy high. LUK’s have been the next best choice. Even Luks are out at the ragged edge, requiring a dead serious slave cylinder adjustment..

 

[Jackson Hanes]

Since I no longer make the Downey chevota specific heavy duty clutches that take less throw out bearing travel to disengage ( stock Chevy clutches take more travel than the Landcruiser hydraulics produce, at the throw out bearing). My cost to produce went crazy high. LUK’s have been the next best choice. Even Luks are out at the ragged edge, requiring a dead serious slave cylinder adjustment..

So what's the fix for the lack of throw out of the OEM slave cylinder; or atleast thats what i gathered from what you said.

assuming that was the problem