This write-up is for OPERATION OF THE 4L80E TRANSMISSION. I (Dale Follett) can write up how to make it work on a 4L60e too if theirs enough interest into it. History: I (Dale Follett) was tired of having my LS engine/4L80e transmission wired up for full manual valve body and wanted it to shift itself automatically like a factory unit. The Hydra-matic 4L80-E Technician's Guide is intended for automotive technicians that are familiar with the operation of an automatic transaxle or transmission. Technicians or other persons not having automatic transaxle or transmission know-how may find this publication somewhat technically complex if additional instruction is not provided. This system works with 4L80E and 4L85E automatic transmissions, as well as 4L60E, 4L65E, and 4L70E automatic transmissions from 2008 and earlier. It is recommended that you use the Baumann wiring harness with this system. shift firmess will depend on load and engine RPM. The shifts will be more firm, as the shift kit is designed to CHANGE gears instead of slowly waiting 5-7 seconds between shifts. The manual part wont make a lot of difference in driving. you just wont upshift until you REMEMBER to upshift. 2. Crosley I see what you mean about going Non-Lockup. Sounds like a very firm shifting kit. This is from TransGo's site>>>. KIT = 4L80E-3. Application= 4L80E & 4L85E 91-up. Features = Stick Shift; Full race; Competition,Off road and Pro-street. Full manual control. If you have some POWER: It'll rattle your teeth. A Microsquirt and 4L80e harness is $450.00, but thats a bit much to swing just for automatic transmission control and I wanted a cheaper option. This is what I came up with, only cost 2 HP tuners Licencing credits and a PCM from the junkyard (Total of $125.00) and some of my time. Required Parts or Tools>. This 4L80E-3 Reprogramming Kit fits 1991 to 2013 General Motors vehicles equipped with the 4L80E and 4L85E automatic transmission with gas engines only. Home. About Us. Provides full manual control for upshifting and downshifting 1 st through 4 th gear; Includes: Accumulator valve spring, end plug and O-ring; Relief valve system plate Full manual 4L80E I am thinking about going full manual with the 4l80e until I can afford to upgrade to efi and trans controller all in one. My question is how streetable is a manual 4L80E and is it hard on the transmission? Seems like repeatedly shifting at full pressure would shorten it's life but I'm no transmission expert. 1 91-Up T34165ED 4L80E-HTRK 165J Reprogramming Kit™, Hi-Perf/ HD Automatic w/ Complete Gear Control (Transgo®) . 1 91-Up T34169E 4L80E-HD2 165J Reprogramming Kit™, Stick Shift. Manual Shift Only (Transgo®).. 1 91-Up T34173E 4L80E-3 Pre-1993 4L80E transmissions use a different internal wiring harness and pass-through connector. This early harness has a problem with leaking fluid at the pass-through connector. GM recommends upgrading to the newer connector and wiring harness. Because of this, we do not provide a wiring harness for it. If 4L60e to 4L80e Swap - Installing a 4L80e Transmission on a 4X4 How to wire your 4L80e to full manual DIY junkyard 4l80 tranny modified for full manual shifts. transgo 4l80e-3 kit and a few tips / upgrades 4l80e REBUILD!!! Valve Body Removal And Electrical Component Testing!!! - a21bravo 4L80E: The Most Worry-Free Remanufactured Transmissions. Converts normal 4L80E to full manual operation. Eliminates the need for expensive stand-alone controller or tuni