518 Auto to Getrag 360
I apologize in advance, I know there are lots of threads on this swap. My reason for this thread is many leave out all the parts and modifications required as well and some contradicting info. The 518 auto is a 4 speed (3 with OD).
Here's my build
92 W250 CTD ext cab long box with 3.55 gears on 35" tires. (2 piece rear driveshaft)
-Getrag 360 w bellhousing, shift fork, boot and 4x4 shifter plate
-NP205 29 spline t case OR use the NP203 with a spline adapter (23-29)
-Flywheel bolts (M12x1.25x36mm)
-Clutch pedal + Rod + C clip to secure rod to master cyclinder
-Clutch master cylinder + slave + bracket to secure the master to firewall
-Modify or purchase 4x4 spacer block on shifter pivot point and shifter rod to t case must be modified or purchased
-Some minor wiring for neutral switch
-Crossmember bushings (very inexpensive and great time to change out)
I decided to rebuild my getrag while I had it on the shop bench. Everything looked great but the rear bearing on mainshaft was toast due to a common practice of shimming too tight. Getrag transmissions are known for eating input shafts alive as a result. A full bearing/seal kit and the getrag was ready to go. I used 6L of Amzoil synchromesh oil (5L is required...6L is a common fix). I used a LUK Gold Series clutch as my truck is fairly stock hp. Southbend makes excellent clutches, flywheels and hydraulics for the higher horse power rating. I used a stock flywheel and the stock brass pilot bushing which many will machine the flywheel to accommodate a roller bearing.
To elaborate on the minor wiring required with this swap... The 518 uses a 3pin plug on the transmission as a neutral safety switch and to trigger the reverse lights. The 2 outer wires (purple w black stripe and white) are used for the reverse lights. Simply crimp on 2 female blade connectors and they slide onto the Getrag reverse sensor. The Centre wire (purple with yellow stripe) is for the neutral safety. Simply ground the wire to a
I found the swap to be fairly basic with the help of a proper transmission jack.
Minimal modifications required other than the driveshafts. I found huge improvement to the truck and better fuel mileage. No more lag from the 518 auto and the ability to downshift effectively on hills. I left the auto shifter on the column for the humour.
92 CTD w Getrag, 4"skyjacker springs, Jungle RCC shackles/hangers, 35x10.5 R16 swampers, BD Fuel Pin, BD Turbo Housing, 4" Turbo back w pyro
Last edited by benseibel; 03-16-2015 at 06:54 PM.