I tell customers that drive like that "You need a 4L80E Or you need learn that 4L60E's have a "duty cycle" & drive them accordingly. Front Sun Gear.The current plan is to see about running a switch-pitch TH400 and possibly a gear vendor.
Front 5 Pinion Planet.Rear 5 Pinion Planet.Complete 5 Pinion Gear Train Set. Then repeat this over & over, The Clutch Pack cannot cool down! Chevy GMC 7 Piece 4L60E 4L65E 5 Pinion Gear Set, Bearing Style. I'm sure you have seen the guys that get up in high gear, Then Stomp on it.Forcing a 4-2 downshift & let it up shift at WOT into 3rd & 4th. The 3-4's can only handle so many repetitious on/off cycles before they get REALLY hot. On good/low mileage units that burn down 3-4's for no "apparent" reason is generally caused by the Human driving it. Of course a leak in the 3-4 apply circuit will cause it to. The 3-4 Clutches burning down is the next common failure, On high mileage units.The hydraulic integrity (Poor line pressure rise)of the unit degrades over time & the 3-4's are the first thing to go. Sonnax has a "Smart Shell" that 100% fixes this issue. My theory on the Sun Shell is, At first GM made them to hard, And flexing at the Splines would fatigue the metal, Then they Updated it to softer steel.Then the Splines would strip clean off.
I'll be interested in Frank Performabuilts insight on this as well.I build them for a living & don't have a full explanation, I have seen some go 300K plus, Some go 50K and die. Shop by 700r4 4l60e Corvette Servo price, category or brand on Ebay. I know this is kinda off topic but I figured I would throw it out there. Find the largest selection of cheap 700r4 4l60e Corvette Servo on sale. Basically Im saying to "properly" do it requires the mechanical parts and upgrades to make firm shifts rather than relying on tuning to solve it for you with forced pressures. case if its burning the band you might try the Corvette servo should help it. 90psi is the stock pressure for 05/06 GTOs and I still use that setting with my built trans with shifts recorded. Ive owned this truck for over a year now and had no troubles other than a. IMO, a proper shift kit should be utilized to deal with shift upgrades rather than taking shift pressures above 90psi with tuning alone. 92 95 TBI Trucks With 4L60E And 4L80E Tbi Injector Wiring Diagram Wiring Diagram Siredward Co.
There is a decent trans guy on the HPT forum that always says dont bump line pressure without it. Ecu Pinout Collection + Small Ecu Connection Software. The Corvette servo can help in firming up the 1-2 shift and I've also read that it is more apt to dealing with shift pressure increases. There is also aftermarket servos that are just as good or better made by companies such as Sonnax, TransGo.etc. Right away you will notice faster and firmer 1-2 and 2-3 shifts. 4T65E 4T60E Extended Length Forward Band Servo Pin Kit 84571-01K 42.
The 4L60/65E series "Corvette servo" will work in non-equipped models. Corvette Servo (part number NTP-K51828C) Arguably one of the most inexpensive, yet most rewarding upgrades to your 700R4 or 4L60E (4L65E, 4L70E) transmission is the corvette servo. im rebuilding 4l60e out of 97 firebird during valve body dissembly i laid each.