4L60E and a supercharger!
#11
TECH Addict
iTrader: (7)
The combination of weight with the instant torque hit of a blower is what will kill a trans. That said, I had what was FLT's best 4L60E at the time with a 5.3/MP112 running 12 PSI and it never gave me a problem in a 6000 LB Av. Might have been different with some sticky tires though. Didn't even think about running it with my current motor.
Sure the gearing of the 60E is nice for lower powered vehicles, but there is no downside to a 4L80E once you get up there in HP/TQ.
Sure the gearing of the 60E is nice for lower powered vehicles, but there is no downside to a 4L80E once you get up there in HP/TQ.
#12
13 Second Truck Club
iTrader: (7)
It all depends on the weight .....The post of 4 pinion planets being weak is false. If you set it up to shift crazy hard yeah, your going to break the planetaries. I have seen and broke more sets then you can believe. I only broke 1, yes only 1 set from overpowering it.
#13
I probably explained that wrong. Every part has its limitations, for most people, upgrading to a 5 pinion may not be necessary if you have everything set up properly.
Again, we talk about weight, that is easily overlooked. This is a truck site, so we all probably have heavy pigs.
A large low stall converter combined with a stiff shift will break hard parts.
Modifying shift tables and having too firm of a shift combined with weight and traction, again will kill hard parts, planetaries included. Of all the ones I have broke and seen broke are usually from improper set up, builder or tuner error. Mostly too abrupt/stiff of a shift. You gotta leave some torque management in it too, but That's another deep discussion.
Again, we talk about weight, that is easily overlooked. This is a truck site, so we all probably have heavy pigs.
A large low stall converter combined with a stiff shift will break hard parts.
Modifying shift tables and having too firm of a shift combined with weight and traction, again will kill hard parts, planetaries included. Of all the ones I have broke and seen broke are usually from improper set up, builder or tuner error. Mostly too abrupt/stiff of a shift. You gotta leave some torque management in it too, but That's another deep discussion.