Any higher horsepower G8s running a Century Transmission?

[G8-4-Speed]

Just as the title states.....anyone in the 550-700 rwhp range running a century built 6L80E? we are debating on taking the plunge but would like some feedback as the price is alot to dish out without a good proven track record. I know the 6L80es hold up in the vettes but how bout something with a little more weight?

Doug's is still in one piece. I don't think you can beat one harder than his....Not sure how many miles are on the build but it has several 10 sec timeslips. Nothing too special, just a couple extra factory clutches, a few welds here and there, and a good tune.

[wreckwriter]

An awful lot of it is in the tune. I'm still of the opinion that there's only a handful of guys that can properly tune a 6L80 in a G8.

[shane]

I've seen a few different cars have issues with their transmissions. I know Robbie with the maggie car that made 650+ has one of their builds and is using my tune with it last time i checked and is working great. I know that orange APS TT G8 2 owners ago had a few issues on a freshly built century one also. I think he got it redone again and had a remote tune done by Pat G last time i checked but now the motor let go.

I would go with a simple build on the trans that nothing crazy like Rick said. Also get a good tune and good cooler and i bet you won't have much issue.

It's just crazy to me how some guys have no issues with their 6l80es and other guys break them at the 400-550 mark. I guess ill keep tabs on the owner of my old car once he really starts driving it and see how much longer it goes for.

[XplicitPerformance]

Yeah we are going to run another trans cooler on ours as well. We are getting ready to crank the car up a tad and want to make sure we got a tranny that can at least live for a while. I have been in talks with Jannetty Racing and those guys seem to have a good grasp on the 6L80es however there 5400$ price tag is a hefty one. I just hate to fork out that kind of change and something not hold together.

[ULTRA Z]

RPM has went 8s with a 4L60E in a 3950lb camaro. I have never had issuse in my Fbodys with a built 4L60E so wgen my G8 trans goes I'll try the swap and see how the 4L60E does in the G8.

[G8GT721]

I have been going back and forth on tunes with Mike@Century for awhile. Still having issues, hopefully weather holds up so I can do I few more logs and tunes and be done. Wish I just got a new or rebuilt stock

[XplicitPerformance]

I have been going back and forth on tunes with Mike@Century for awhile. Still having issues, hopefully weather holds up so I can do I few more logs and tunes and be done. Wish I just got a new or rebuilt stock

Having issues with the Century trans?

[G8GT721]

Having issues with the Century trans?

Yes, going back and forth with tunes, it slams at low throttle sometime feels like someone behind has a rope and stops at shifts. He is willing to bet its a tune issue not mechanical. I had it at SlowHawk and Don downloaded a bunch of his tunes no real change. Don thinks mechanical. I just bought Hp tuners so i cam work with him. But I've been traveling a lot for work no real time to work with him. Under 1500 miles no racing

[XplicitPerformance]

well thats how it always is. The Tuner blames the trans and the transmission shop blames the tune. I been there before with other vehicles.

[G8GT721]

The trans shop is the tuner. SlowHawk was just downloading for me