I've had a couple trucks with 4L60's. Since I had many trouble free miles, I've learned to like them. I do like the gearing for heavy truck with a gutless engine.
What issues to you see in a stock truck? LOL
2010 Sierra - need some info
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What issues to you see in a stock truck? LOL
Rebuilt enough of them from stock trucks to know the weak points. Tow anything with some weight and it's on borrowed time.
You say "vintage" but then again a 13yr old truck in the land of the salt is probably a stretch, don't see that here.
Some how I’ve gotten 165k on the one in my 05. I’ve towed a boat with it since new. Started with an 18’, then up to a 22’ for most of the time. Eventually it’s going to go, just like my rockers and frame rails.
The biggest thing I've seen that kills any automatic transmission, somebody gets stuck out in the woods in a hole and they're rocking back-and-forth between reverse and drive, the fluid heats up and it just burns everything up.
Then again that is sitting still, radiator and fans only do so much it's not moving down the highway with air coming through the front of the vehicle.
4L60E is light duty. We had a recipe to make them strong but they just only hold so much.
4L80E is much better but that's a heavy pig.
Then again that is sitting still, radiator and fans only do so much it's not moving down the highway with air coming through the front of the vehicle.
4L60E is light duty. We had a recipe to make them strong but they just only hold so much.
4L80E is much better but that's a heavy pig.
Which are? Assuming the cooling is covered. Every truck I've owned had an external cooler.
Don't be scared to be technical. What is an upgrade beyond the drum and a cooler in a 4L60 to survive in a stock truck application. Including towing 8000lbs.
3/4 Clutch pack is the first one. Only 4 friction rings if that many from the factory. We would pack 13 in there similar to how the 700R4 is setup. It makes a difference. Then a Corvette Servo or Billet Super Servo, Race Band, Transgo HD2 Kit for the Valve Body. 5 Pinion Planet. Turn up the EPC a hair. Pretty sure a block on the 2nd accumulator also, been a few years since I was in one. Never needed to do a Billet Drum.
That's more of an upper build but it lengthened the life. 3/4 Clutch Pack maxed out and upgraded Servo with EPC turned up a hair is the minimum I would do.
Then again everyone has their methods. As you see there's more to it than just a drum.
I've tuned some with my Laptop also and that's a whole different level of tweaking.
That's more of an upper build but it lengthened the life. 3/4 Clutch Pack maxed out and upgraded Servo with EPC turned up a hair is the minimum I would do.
Then again everyone has their methods. As you see there's more to it than just a drum.
I've tuned some with my Laptop also and that's a whole different level of tweaking.
How about constantly hunting for a gear? I've heard that's a killer too. Defensive city driving with a torqueless 5.3 in a heavy truck will have it all over the place in that regard.
As far as it up shifting and down shifting all the time? Seen that was a thing more in the 6spd autos since they bounce between gears more.
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