No, but the aftermarket clutches seem to be more sensitive to overheating. Just make SURE you install a BIG trans cooler and you should be fine. But you will have to machine the apply disks to make clearance for the extra clutches.
No, but the aftermarket clutches seem to be more sensitive to overheating. Just make SURE you install a BIG trans cooler and you should be fine. But you will have to machine the apply disks to make clearance for the extra clutches.
2008 GT - 2300 Maggie, Comp cam, ARH LTs, staggered Breyton GTS, 6spd Manual conversion DONE!!.
From previous owner: 552 RWHP, 589 RWTQ; Tuned by Patrick G via EFI live Autocal
I think I will be going back with a brand new OEM transmission this time. Seems noone really has a good BUILT 6L80E out there on the market. I was looking into century but it seems they are still experimenting with the clearances and tolerances.
Best idea at the time i think.Before i sold the G8 was telling myself i'd just go the same route whenever mine went.Originally Posted by XplicitPerformance
2009 G8 Procharged/Cammed 10.55@134.3 1.60 -SOLD
2008 A6 LS3 C6 Cam only 10.62@126.7 1.44'
I am still for machining for the extra 3-5 and 4-5-6 clutches using factory fibers and steels. That is the best upgrade. The 3-5 I cut the cage down and notch the 1-2-3-4 endplate. The 4-5-6 gets a thin end retaining ring and .035-.040" cut off the step in the end plate. I run .065-.075" clearance. Too much and the clutch plate will hang up on the drum retaining notches on the teeth.
The Alto kit is junk. PERIOD. Anything that is worse than stock is junk. Dougs trans has held up great with the setup above and doesn't get cut an slack....
https://www.facebook.com/RickCrawfordRacing
2009 G8 GT-Rick Crawford- LS-4-SPEED@nc.rr.com
2.00 60ft 13.06 @ 106.65 w/ 1.85 SLP Rocker-HPTuner
1.97 60ft 12.97 @ 107.9 w/ 3.45 gears
1.97 60ft 12.87 @ 107.7 w/ 4"-2.5" exhaust
1.94 60ft 12.57 @ 111.9 w/ 217/225 Lunati cam
2.03 60ft 12.37 @ 115.3 w/ Doug Thorley headers
1.94 60ft 12.20 @ 115.0 w/ 219/233 Thumpr Cam
1.70 60ft 11.38 @ 121.5 w/ 100hp NOS Dry shot-HSW controller & 285/40 NT05 Drag Radials on stock 18's
1.72 60ft 11.65 @118.55 w/ 221/233 111LSA+0 Ported AirRam intake, Street tires. All Motor. DoD/AFM still functional.
1.66 60ft 10.87 @ 127.08 w/ 221/233 lunati, 2800 stall, 100HP wet nitrous shot, milled & ported LS3's.
1.65 60ft 10.81 @ 129.10 150Hp shot 2600 stall.
1.53 60ft 10.59 @ 129.72 ALL MOTOR! ! ! ! Fastest N/A G8 Record Holder
"they" don't do it. The extra stock clutch is my doing....
Alto tried to make some weird clutch arrangement that uses a hybid fiber plate which get another 2 clutches. They are steel one side, clutch on the other. But this design makes everything paper thin and just burns up with an power. To make it worse, the clutches are applied from a thin outside ring on the piston and the clutches are so thin, they deflect so it only grabs on the outside edge of the clutch.
https://www.facebook.com/RickCrawfordRacing
2009 G8 GT-Rick Crawford- LS-4-SPEED@nc.rr.com
2.00 60ft 13.06 @ 106.65 w/ 1.85 SLP Rocker-HPTuner
1.97 60ft 12.97 @ 107.9 w/ 3.45 gears
1.97 60ft 12.87 @ 107.7 w/ 4"-2.5" exhaust
1.94 60ft 12.57 @ 111.9 w/ 217/225 Lunati cam
2.03 60ft 12.37 @ 115.3 w/ Doug Thorley headers
1.94 60ft 12.20 @ 115.0 w/ 219/233 Thumpr Cam
1.70 60ft 11.38 @ 121.5 w/ 100hp NOS Dry shot-HSW controller & 285/40 NT05 Drag Radials on stock 18's
1.72 60ft 11.65 @118.55 w/ 221/233 111LSA+0 Ported AirRam intake, Street tires. All Motor. DoD/AFM still functional.
1.66 60ft 10.87 @ 127.08 w/ 221/233 lunati, 2800 stall, 100HP wet nitrous shot, milled & ported LS3's.
1.65 60ft 10.81 @ 129.10 150Hp shot 2600 stall.
1.53 60ft 10.59 @ 129.72 ALL MOTOR! ! ! ! Fastest N/A G8 Record Holder
Yeah looks like thats the ticket. I am going to give another factory 6L80E the go ahead one more time. Maybe that will give me time to convince the boss to let me put a 4L80E in her car. She hates losing the extra 2 gears but I like the durability especially with the plans to crank things up.
thats a nice write up... never seen one that involved for a trans on the forum
i wish i read this before i order altos,, can you please elaborate in more details -pics if possible- on how to rebuild using factory clutches?
where to get a thinner retaining ring for 4-5-6?
anything to be done to 1-2-3-4 or 2-6?
http://parts.nalleygmc.com
Pull up our trans and they list all the retaining rings available. I believe the ones you need are:
24233407- 4-5-6 thin ring
24240194- 3-5-R thin ring *** you have to machine the clutch stand or end plate to get clearance on this clutch pack for the extra clutch and steel.
You need a
fiber kit- 24248008
Seals- 24260143
1-4 steels- 24258080- 5ea
3-5-R-steels 24258082 -5ea
4-5-6 steels 24258083- 7 ea
3-5-R fiber 24235681 - 1 ea
4-5-6 fiber 24224158 - 1 ea
https://www.facebook.com/RickCrawfordRacing
2009 G8 GT-Rick Crawford- LS-4-SPEED@nc.rr.com
2.00 60ft 13.06 @ 106.65 w/ 1.85 SLP Rocker-HPTuner
1.97 60ft 12.97 @ 107.9 w/ 3.45 gears
1.97 60ft 12.87 @ 107.7 w/ 4"-2.5" exhaust
1.94 60ft 12.57 @ 111.9 w/ 217/225 Lunati cam
2.03 60ft 12.37 @ 115.3 w/ Doug Thorley headers
1.94 60ft 12.20 @ 115.0 w/ 219/233 Thumpr Cam
1.70 60ft 11.38 @ 121.5 w/ 100hp NOS Dry shot-HSW controller & 285/40 NT05 Drag Radials on stock 18's
1.72 60ft 11.65 @118.55 w/ 221/233 111LSA+0 Ported AirRam intake, Street tires. All Motor. DoD/AFM still functional.
1.66 60ft 10.87 @ 127.08 w/ 221/233 lunati, 2800 stall, 100HP wet nitrous shot, milled & ported LS3's.
1.65 60ft 10.81 @ 129.10 150Hp shot 2600 stall.
1.53 60ft 10.59 @ 129.72 ALL MOTOR! ! ! ! Fastest N/A G8 Record Holder
Just wanted to add that my trans is still working great with the alto clutches. I went with .095 clearance on the 35R if I remember correctly. The STS-V trans has a shallower 35R drum and there is not enough room for all the clutches. I had to leave one out. The most power I put through it was 575/621. I removed the turbo and went back to the stock supercharger so I'm down to 480/490 now.
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