4L60E breaking hard parts
11-30-2018, 07:13 AM
#11
did they say how the planets failed? Any pics? Heat marks?
Having BOTH planets fail tell me 2 things are likely. Not the only possibilities...but the most likely.
A-the shop used cheap chinese knock off 5 pinion planets. These are JUNK.
B- you have a serious lack of lube somewhere. Likely a restrictive cooler or plugged up passage.
Having BOTH planets fail tell me 2 things are likely. Not the only possibilities...but the most likely.
A-the shop used cheap chinese knock off 5 pinion planets. These are JUNK.
B- you have a serious lack of lube somewhere. Likely a restrictive cooler or plugged up passage.
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3wide (12-02-2018)
12-02-2018, 02:00 AM
#12
maroonmonster is correct in his response about the 5 pinion planets and other info etc.
Somebody screwed up the 1-2 accumulator and your billet servos, your stiff 1-2 shift with the tight converter killed the hard parts. I have done it myself. If its the biggest solid Billet intermediate servo its gonna hit HARD. A SMALLER diameter converter is a must when you start making power. Guessing yours is still a 12 inch giant pendulum. Weight + huge servos, large converter, wrong accumulator set up = broken parts.
Your'e not overpowering it. Your trans guy may be good, but he doesn't know the correct way to get a 60e to hold power. yes in the end it may die, but you would be surprised how long it could hold up if built right. I put 900+ whp to one with 4500lbs, sub 6 second 1/8's and what killed it was the rear end that went out.
If the hydraulics have been upgraded correctly the Tune shouldn't have to change at all. Once you start really making power the 2-3 shift timing needs to be changed but pressures stay the same. Its good that the torque management is in, you only need it at maybe 3/4 throttle and above. You can remove it down low. Sounds like they got most of the problem corrected, you should be good to go,
Somebody screwed up the 1-2 accumulator and your billet servos, your stiff 1-2 shift with the tight converter killed the hard parts. I have done it myself. If its the biggest solid Billet intermediate servo its gonna hit HARD. A SMALLER diameter converter is a must when you start making power. Guessing yours is still a 12 inch giant pendulum. Weight + huge servos, large converter, wrong accumulator set up = broken parts.
Your'e not overpowering it. Your trans guy may be good, but he doesn't know the correct way to get a 60e to hold power. yes in the end it may die, but you would be surprised how long it could hold up if built right. I put 900+ whp to one with 4500lbs, sub 6 second 1/8's and what killed it was the rear end that went out.
If the hydraulics have been upgraded correctly the Tune shouldn't have to change at all. Once you start really making power the 2-3 shift timing needs to be changed but pressures stay the same. Its good that the torque management is in, you only need it at maybe 3/4 throttle and above. You can remove it down low. Sounds like they got most of the problem corrected, you should be good to go,
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