Tuning an LBZ/ZF6

LBZ

Super Moderator
Staff member
Jul 1, 2007
9,570
15
38
42
B.C.
I have a buddy that wants me to huck a tune into his LBZ/ZF6. Is there anything you do different between tuning a ZF6 as opposed to an ally? I’ve never tuned a ZF6 before and wanted to check it out before I dive into it.
 

Yngdmax92

Member
Sep 26, 2013
804
1
18
Hopefully corbin jumps in and says something. He's knows a thing or tune about this subject.
 

fl0w3n

Member
Jan 8, 2015
492
21
18
I only had my LB7/ZF6 a short period of time, but @DAVe3283 was able to get his normal tune up and running on the truck and it ripped. Felt like a different animal compared to the same tune in my Allison LB7.

The only issue I recall was a TCM communication error code, which I didn’t own the truck long enough to sort out with Dave.
 

clrussell

pro-procrastinator
Sep 23, 2013
5,478
85
48
When I tuned mine I just ran a script over the stock file and sent it, worked great.

but im no expert
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
17,622
194
63
Phoenix Az
All red Dale .

Shouldn’t be any differences. Certainly don’t have the defuel issues you normally need to worry about
 

LBZ

Super Moderator
Staff member
Jul 1, 2007
9,570
15
38
42
B.C.
Alright then.
I’ve been told they de-tune these compared to ally trans trucks but I’ve never looked at the tuning to compare. Guess I’ll find out. Thanks y’all.
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
17,622
194
63
Phoenix Az
They do but it’s just with more limiters like they do with the medium duty trucks
 

LBZ

Super Moderator
Staff member
Jul 1, 2007
9,570
15
38
42
B.C.
They do but it’s just with more limiters like they do with the medium duty trucks
I see. So if I script my tune into it then all those limiters should be gone and the truck should wail. Either way it’s gotta be better than the Bully Dog in it now.
 

clrussell

pro-procrastinator
Sep 23, 2013
5,478
85
48
I’ll say if it’s a stock clutch it won’t last long. Even my single disc upgrade wouldn’t hold any power.

dual disc and big tuna was fun in that truck.
 

S Phinney

Active member
Aug 15, 2008
3,966
5
28
Quncy, Fl
Clutch upgrades will be a must. With a standard tranny the only thing I can see that I would do differently would be first see how the truck responded to my normal tuning and adjust torque and throttle injection accordingly for acceptable driving conditions. You can make them too responsive and wouldn’t be much fun to drive.


Sent from my iPhone using Tapatalk
 

LBZ

Super Moderator
Staff member
Jul 1, 2007
9,570
15
38
42
B.C.
It has a southbend in it I’ve been told. No lift pump either so rail pressure will likely fall off before the clutch slips. His biggest complaint right now is that it’s a turd under 2500 rpm so I’ll see what happens with my basic tune and go from there.
 

The A Team

New member
Jul 26, 2015
21
8
3
It has a southbend in it I’ve been told. No lift pump either so rail pressure will likely fall off before the clutch slips. His biggest complaint right now is that it’s a turd under 2500 rpm so I’ll see what happens with my basic tune and go from there.

Thats the life of a manual not having the torque multiplication of a converter.
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)