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I checked this against a stock 02 tune file from the repository.
What you posted here is completely stock as far as the trans is concerned.
There is some tuning in the engine section.
Yes, it's the only time as far as I know. The cat came with it. I had no idea there was a tune at all. The tuner here said it had been adjusted for the gears. I went form 3.15 to 3.42
I finished building that just before Christmas. If you look close by the left rear wheel you can see the red base to the original motor. And if you look close to the mid right hand side you can just see the new yellow hand crank engine stand the the LS3 is on. It's right behind the 1/2" impact.
These things don’t lock at WOT.
Even if they did, and I know you can force them to, that requires a triple disc clutch in the converter. SS3200 doesn’t have that.
He said all gears basically failed…..
Mine does lock at WOT in 4th (OD) in my C5. I had to hit around 150mph before it did, as I recall. But not a stock tune. I think the C5 4L60E is slightly different than the Fbody 4L60E, though.....
I can't help much, but maybe my experiences will give some insight.
My PCM was programmed by A&A Corvette in Oxnard CA when I changed from 3.15 rear drive to 3.73 to make sure shift points were correct and to forestall an unexpected downshift from 3rd to 1st at high throttle settings coming out of a turn. I ONLY use 2nd or 3rd on track but occasionally hit rev limit in 2nd because of a late manual upshift. When I am late, the engine shakes the car.
Before A&A reprogrammed the PCM, the engine would hit rev limit in 2nd and not upshift, shaking the car. Reprogramming the PCM stopped that.
No opinion on the converter, but my car has the stock converter and is fine on track. I have no use for a higher stall converter, which would make more heat to be dissipated. I like torque coming out of a turn.
For 12 years I have only used Red Line D-4 full synthetic ATF and change fluid and filter about every 7 track days. I occasionally have to come off track when trans temp hits 250.
My car has a DeWitts radiator with both engine and trans coolers, large auxiliary trans cooler in front of the condenser, B&M finned aluminum trans pan with two extra quarts capacity, Improved Racing engine oil thermostat.
23 track days, 6 at Buttonwillow Raceway, 13 at Laguna Seca, 4 at Arizona Motorsports Park. 117,000 miles on the car, Stock HP.
Still learning to drive at 77.
......"still learning to drive at 77 yo." Good for you, Jim993!!!!! You go, Guy!!! I'm pushing 68. Posts like yours help give me confidence I'll be able to still 'do it' at 70+
Did you put a line pressure gauge on the rebuild and check the line pressure? That's the only way to know the pressure is right. There is no pressure feedback to the PCM so it has no idea what the actual line pressure is.
Losing 4th but still having 3rd points to the 2-4 band. But, a common failure is the 3-4 clutch which causes both 3rd and 4th to be lost and you did post that 3rd isn't good so that points to the 3-4 clutch. It might kind of hold 3rd because that is direct drive instead of overdrive so it's not as much load on the clutch to move the car.
Did you change the transmission tuning when you added the converter? If not, that's surprising to me that it still drove OK and was shifting when it should especially at WOT without hitting the rev limiter.
Is your engine stock, or making more power?
The 4L60e transmission really isn't that hard to tune. It's not like a 6L80e or other higher # gears transmission where the controller has to time the apply and release of the clutches during a shift. About the only thing that would cause failures like you're having is someone screwing up the line pressure tables. Shifts are just a solenoid turning on or off, no PWM or timing. The PCM just applies or removes 12V to one of 2 solenoids and the shift happens. They just shift stupidly when you tune the shift tables wrong.
grinder11 - you're really lucky if you can keep any 4L60e alive and healthy behind 600hp.
Hey, Peter. Yes, I've been VERY lucky.....So far. I'm even asking for trouble by running that 3,200 stall Yank. When Kurt Urban was still at Wheel 2 Wheel years ago, he told me the only thing saving that stock trans was the tires. I was running 315/30/18s on 10.5" rear wheels. They were Michelin PS2s. Pretty good meats, but definitely not DRs. He told me that the big engine may actually help save it when combined with the PS2s, because they're 1" smaller diameter than stock, and the engine just broke them loose at will. He told me if I ever put Nittos, MT ET Streets, etc on it, I'd find out real quick just how weak the stock trans is........
I am running Michelin PS 4's all the way around. I have a set for the street and a set for the track. From reading here, maybe it's because of not having triple disc TC, leaving the car in O. D. and tires that refuse to spin. Some of the guys I am with on track night are running full slicks, or Michelin's as well. My times are right there with some of the fastest, the tires do scream, but do not lose grip. I am so very pleased with them.
What TC should I be running?
Do I keep the car in 3rd gear?
What program do I have put in for the trans?
I am running Michelin PS 4's all the way around. I have a set for the street and a set for the track. From reading here, maybe it's because of not having triple disc TC, leaving the car in O. D. and tires that refuse to spin. Some of the guys I am with on track night are running full slicks, or Michelin's as well. My times are right there with some of the fastest, the tires do scream, but do not lose grip. I am so very pleased with them.
What TC should I be running?
Do I keep the car in 3rd gear?
What program do I have put in for the trans?
In my opinion, and many others, Yank is right there with the best of them, if not THE best. You shouldn't need any other converter. I would certainly try flushing the converter, though, and before you reinstall it the next time. The triple clutch converters are good, too, but also heavier, if that matters to you. I've never had an issue with my Yank 3,200. Put it in drive, and go like Hell.......
Where are you located? I'm from the east side of the state in Oakland County originally, now I'm a half hour north of GR.
I'm in a little one horse town (that I love for the peace and quiet.) about 30 miles North of Lapeer, Michigan. 15 miles from Lapeer International Dragway........
I always have the TC cut open and gone through. I will see if a third disc can be added. When you say put it in drive, you meen 3rd correct, not O.D.? Because I always leave the car in O.D..
I always have the TC cut open and gone through. I will see if a third disc can be added. When you say put it in drive, you meen 3rd correct, not O.D.? Because I always leave the car in O.D..
No. I leave it in D/OD. 1 detent from N. Sorry for the communication error.....
