The solenoids are both powered with system voltage when the ignition is on. It alsoretains torque converter clutch engagement in overdrive and still allows lockup in lower enginerpm. We specialize in building the 4l80e for retrofit applications. The 4l80e incorporates a pressure manifold assembly, which provides ground signals to indicate the manual valve position to the. Auto shift valve body with pro tree fluid release transbrake feature. This conversion turns the 4l80e into a great heavyduty analog overdrive transmission that can be easily swapped into almost any high. This video discusses using a 4l80e transmission without computer control. Build a bombproof 4l80e manual valvebody transmission. No electronics needed, but you can keep the lock up converter if you.
The 4l80e uses shift solenoids a and b to control upshifts and downshifts in all forward ranges. The transmission will have engine braking in 1st, 2nd and 3rd gears. Automatic transmission 4l80 manual valve body guys chime in alright so first off, i have searched on and off for weeks and i just cant. No frills full manual conversion all you need is switchedfused 12v and a switched ground for you tcc. Our valve body hydraulics have proven themselves repeatedly and our transbrakes have set the standard for release time. Easily convert the 4l80e to full manual control net. Full manual control for the 4l60e or 4l80e automatic overdrives. Junkyard builder rossler transmissions hot rod network. However, the 4l80e can be easily converted to a manually shifted valvebody, which eliminates the need for the computer and much of the electronics and wiring.
Transbrake can be activated in lo range and be manually shifted, or can be activated in d3 range and be fully automatic. Minor ecm tweak permits transmission brake activation in d2 range for second gear start capabilities. Similarly, the internal vacuum modulator setup provides an aggressive line pressure curve and regulation without the need for a tcm. This will convert your stock valve body to a full manual shift, normal pattern. No electronics needed, but you can keep the lock up converter if you choose too. So this article provides a triedandtrue procedure for converting any 4l80e transmission to full manual control, eliminating the need for a pcm. Once installed, the tci gm 4l80e transbrake valve body modifies your transmission into afull manual shift, reverse pattern unit with an impressive pro tree transbrake feature. Note that the video says the transmission will bolt in what is meant.
854 1502 1503 1507 414 78 1457 276 914 144 25 1159 978 651 706 666 564 734 1449 257 958 1285