Your other option is, if you're going with an aftermarket torque converter anyways, is to have the torque converter made with the correct offsets and mounting pads to bolt up to the stock 4.8/5.3 flex plate Remove the dipstick, shifter lever, input and output speed sensors, tailhousing, pump bolts, and then the pan. Make sure the bolt seats against the bottom of the caseįlex plate: You will need a flexplate and spacer from ¾ ton GM truck that originally came with a 4L80E. Torque the retaining bolt to 32 foot-pounds (43 Nm). Step 7: Thread a new center support bolt into the center support by hand.
The dual feed mod from what I read is 1) Take the sealing ring at the second from the top of the center support and leave it off 2) Disassemble the direct drum take sealing out from inside of drum (not piston) 3) 3/8 cup plug and plug the hole to the right of the center support bolt as seen from case valve body 4) take a 0.030 drill bit and. Our products have been featured on Gas Monkey Garage, Overhaulin, Spike TV. The support allows the drive shaft to be able to flex, allowing more movement. It can be found in between the transmission and the rear differential. The 4L80E center support is a type of bearing that is used when a longer drive shaft is present. These transmissions can be found behind 4.3 to 8.1-liter gas engines and 6.5 to 6.6-liter diesel enginesĤL80E Center Support. The gearing to move such a heavy load is a 2.48 first gear, 1.48 second, 1.00 third, and 0.75 overdrive. of torque, giving it a max load capacity of 18,000 pounds. The 4L80E has a max torque rating of 440 lb.-ft. Step 3: Test Clutch Pack If a 4L80E spiral lock ring is being installed. Using a large Phillips screwdriver or other suitable tool, apply torque to the center support while tightening the retaining bolt apply torque to the center support while tightening the retaining bolt.
Title: 4L80E SHIFT KIT INSTRUCTIONS Author: C&K Performance Created Date Install and tighten the retaining bolt for the center support. 1997 and up center Torque the mounting bolts to 130 inch pounds.
1997 and up centerĤL80E MASTER SHIFT RECALIBRATION AND ASSEMBLY UPGRADE KIT thru the feed passage in the center support shown in Figure 12.
The flutes will channel thru the feed passage in the center support shown in Figure 9. The installation of an OEM 4L80E fluted sun gear shaft bushing into the overrun clutch housing is highly recommended.
COMPLAINT: Long soft 2-3 apply when hot Torque the mounting bolts to 130 inch pounds. SOLUTION: SK® kit has hardened washer to stop wear under bolt and bushing type seals to prevent case to support leak. Support does not fit case snugly allowing movement that wears support lugs in the case and wears case at the center bolt. You can plug the case passage with a 3/8 cup plug driven in CAUSE: #1 Direct clutch circuit leak between case and support. 4L80E Differences: To dual feed.remove the center lip seal on the apply piston, remove the 2nd sealing ring on the center support, and plug the case hole to the right of the center support bolt.
4L80E 97-UP 2WD OUTPUT SHAFT BOLT ON YOLK TRANSMISSION TAIL CONVERSION MT1 GM 4L80E Torque CONVERTER BOLTS (6) HEX HEAD M10-1.50 x 15mm FREE SHIPPING Transmission Jobber Supply: Ne 4.8/5.3 4L80E Swap & General Information. Unfortunately, all reference just say counterclockwise 4L80E CENTER SUPPORT TO CASE BOLT FEED 4L85E MT1 MN8 TRANSMISSION Shift Rite Transmissions: New 4L85E/ 4L80E: IL, Kankakee $ 7.00: CONTACT SELLER. From what I understand, it's supposed to keep the center support from walking around and damaging that bolt that's been weakened from the lube orifice drilled through it possibly making a poor lube situation. Then torque the bolt down while you hold the center support against the splines.