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6.4L Manual transmisson Owners only thread
Can we make this a sticky??
This should be a place for us manual "gear crushers" to complile all of our data because some stuff is just not the same as the automatic "grocery getters"
I have done a bunch of looking and compiling to figure out the differenance between the manual and the auto but no thread really exists to explain what we can and cannot do like the automatics.
Turbo back exhaust DO NOT FIT, The down pipe interfers with the transmission and fram member. In order to make it fit you wil need to do a modification to the downpipe itself as in dent it or grind down the tab on the transmission housing, also you will need to grind the frame not alittle more or dent the pipe there also
DPF deletes do work with the manual trans, and so do downpipe back exhaust systems. Any size will work, 4" will work but the manual trucks will run and drive better with the 5" systems, more responce to the manual tunes. Depending on the tuner you have ( IT IS REQUIRED FOR DPF AND EGR DELETES) you will either need exhaust with bungs or without them. If you have a race tuner you do not need the bungs and can turn those sensors off.
Tuners will all work but the Auto tunes will not work. You need manual trans tunes. The ZF6 trans will only hold up to a 210-275 tune without slipping the stock clutch. if you are heavy on the throttle then you will probably slip it at 210 tunes.
The best upgrades for this trans you can do is a dual disc clutch. Yes they are expensive but you can load a 310 tune, step on the trottle and roast dual tires so is it worth the cost, you bet. The ZF6 trans is pretty much bullet proof and if you upgrade the clutch it should be smooth sailing as long as its not a pulling truck, then i dont know how long it will last.
Egr deletes and elbows all will work with the manual trans trucks, you will need a race tuner and egr delete tunes to acomplish this. Keep in mind thes tunes have to be manual transmission tunes not auto. Spartan is what i will be using and i know for a fact they have manual tunes ready to go.
If anyone has any other info on gear crusher trucks please feel free to let me know and i will update this tread.