![]() You may be able to use the Sonnax Enhanced Performance Accumulator Spring #77704S with the Sonnax Pinless 1-2 Accumulator, but I am not certain. Use the drill to enlarge the feed passage in the overrun clutch housing as well. If you do go back to a pin type 1-2 accumulator, Sonnax sells a nice Billet one #74927-AP Be sure to drill at a 45 degree angle to maximize oil flow. This install was performed on our 2002 C5 Corvette, the Chinavette project, but. Reprogramming Kit with manual Shift Control Fits 1991-13 4L80E, 4L85E 4L80E AFL Repair Kits. ![]() Reprogramming Kit Fits 1991-13 4L80E, 4L85E Avoid Counterfeits 4L80E-3. I have heard you can use the HD2 kit spring for the 3-4 accumulator with the Sonnax Pinless, but I have not tried it. Installation of the Trans-Go HD2 shift kit in a 4L60e transmission. SHIFT KIT® Valve Body Repair Kit Fits 1991-13 4L80E, 4L85E 4L80E-HD2. The GM OEM Piston with the HD2 kit springs will give you a more firm shift. I use new GM OEM Aluminum 1-2 and 3-4 accumulator Pistons from an early 2000's 4l60e, because the newer 4L60E 1-2 and Forward accumulator pistons are plastic, and will crack and leak. You can use the Sonnax Pinless Forward Accumulator Piston with the HD2 kit, which is what I use. ![]() Place blocks or wedges in front of and behind both rear wheels to prevent movement in either direction. Use inside the original cushion none, 1 or 2 to adjust band. WORK SAFELY For maximum safety, perform this installation on a clean, level surface and with the engine turned off. Step 1 Install BLUE cushion spring GOLD band adjust shims. You will need to use the stock Piston to use the HD2 Springs, or keep the current springs that are in there now. Fits: 1993-2006 GM 4L60E Automatic Transmission. At high RPM, the check ball in the input drum will not seat due to. High-revving engines often have complaints of burnt 3-4 clutch plates with no visible signs of why the clutches failed. It will be a nice firm shift tho, nothing neck breaking.Īlso, the springs for the 1-2 accumulator in the HD2 kit will Not work with the Sonnax Pinless 1-2 Accumulator. This 7-CS clutch spring kit fits 1982 to 2015 General Motors vehicles equipped with the 700R4/4L60, 4L60E, 4L65E and 4L70E automatic transmission. I run that currently, along with the Sonnax Billet 4th Servo, and a bunch of other Sonnax stuff. Their performance shift kits can be installed with the transmission in the vehicle and they come with complete instructions. The vette servo plus HD2 kit wont make it shift to hard unless you modify the settings to much. TransGo even has kits for computer-controlled, 4-speed automatics.
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