4L65-E in the C6
TECH Fanatic
Joined: Oct 2003
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From: Long Island, NY
in the truck version they lower the RATING meaning that the trans will handle such and sch and amount of torque at 5600 rpm instead of 6100 in the car version....i have the car version and its not physically limited at all i rev it past 5600 with no problem.
Staging Lane
Joined: Apr 2002
Posts: 67
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From: The Motor City Area
Originally Posted by Guardsman
Also, there is (was) an upgraded 4L60E that has the hardened parts, it's listed as a 4L60E by GM, but it's RPO code M32 instead of M30.
Originally Posted by Guardsman
One other too, there are two input sprag assemblies, a high speed one and a low speed one. I don't know what the differences are, though, but they are different p/ns, so double check those before you order one.
Originally Posted by Guardsman
That last thing that I can think of right now is that there is also a difference in the low/reverse planetary set. The 4-pinion set that comes in the 4L60Es has an oil slinger on the back of it, and oil holes through the centers of the plantetary gears. The 5-pinion planetary doesn't have either. The Camaro parts manual lists a 4-pinion planetary with the oil slinger, and one without, and says that the one with the slinger is for high output applications. What I haven't been able to confirm is whether the 5-pinion planetary gears were changed so that they don't require the oil holes any more. I haven't seen the "low output" 4-pinion planetary, so I don't know if it has oil holes or not.
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Verdad Gallardo TECH Fanatic
Joined: Oct 2003
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From: Long Island, NY
The 4-pinion "high-speed" variant only came in the Corvette and V8 F-cars (this is why there are 2 pn's for F-car: V6/V8). The 5-pinion sets produced from 2001 to 2004 for 4L65E's do not have this "high-speed" oil slinger and hollow pinion pins. It's purpose is for VEHICLE high speed, not SHIFT speeds. Meaning, sustained top speed runs at 160 to 170 mph can really abuse the output carrier and pinions(imagine the output carrier and pinion speeds as they are overdriven in fourth gear at 170mph). Without the "high-speed" design, you'll eventually burn the pinions/washers. But remember, this is for GM's test of "Running the Corvette completely through one tank of gas at it's highest attainable speed." Not something the average driver is likely to do unless you drive on the autobahn (the reason the spec exists is for european corvettes). So basically those 2001 to 2004 4L65E's will work fine in your F-car. The 2005 C6 4L65E WILL HAVE a "high-speed" output carrier, it's just designed differently than the "slinger and hollow pins" 4-pinion method.
Staging Lane
Joined: Apr 2002
Posts: 67
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From: The Motor City Area
Originally Posted by DeepBlueZ
in short, am i gonna have a problem with this tranny???
But seriously, that 5-pinion won't give you any trouble witohout SUSTAINED high speed. Meaning, it's the heat build up over the course of a 30 to 45 minute run at top speed that'll distress those pinions. "Excusions" up to top speed won't do this.
TECH Fanatic
Joined: Oct 2003
Posts: 1,514
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From: Long Island, NY
Originally Posted by BAD APPLE
No. Just don't enter the Silver State Classic
But seriously, that 5-pinion won't give you any trouble witohout SUSTAINED high speed. Meaning, it's the heat build up over the course of a 30 to 45 minute run at top speed that'll distress those pinions. "Excusions" up to top speed won't do this.
But seriously, that 5-pinion won't give you any trouble witohout SUSTAINED high speed. Meaning, it's the heat build up over the course of a 30 to 45 minute run at top speed that'll distress those pinions. "Excusions" up to top speed won't do this.
6-speed Auto Update 
JUST THOUGHT I WOULD PASS THIS ON, THE 06, AND 07 CORVETTE WITH PADDLE SHIFT ON STEERING WHEEL HAS THE N-E-W HYDRA MATIC 6L80 SIX SPEED AUTOMATIC TRANSMISSIONS (THATS RIGHT I SAID SIX SPEED AUTO) WITH GEAR RATIO'S FIRST THRU SIX, AND REVERSE AS FOLLOWS:4.03,2.36,1.53,1.15,0.85,0.67,AND-3.06!!! MAX 413BHP/430FT LB TORQUE! THESE ARE ALSO FOUND IN CADILLAC XLR/XLRV/ AND STSV. GMC YUKON DENALI/DENALI XL. ESCALADE ESV/AND EXT!! HAVE BEEN LOCKING AT MY OPTIONS ON MY 01 WS6 TRANSMISSION UPGRADE!! HOPE THIS HELPS,RODNEY. 
