Lockup for mine is set at 50.

 

Here are my OD lock-ups: (65E, 4:10, 32" tires)

TPS% MPH
0.00 - 44
6.25 - 44
12.50 - 44
18.75 - 44
25.00 - 46
31.25 - 48
37.50 - 56
43.75 - 76
50.00 - 97
56.25 - 136
62.50 - 251
68.75 - 251
75.00 - 251
81.25 - 251
87.50 - 251
93.75 - 251
100.00 - 251


These are when I had my Radix'd 6.0L. There was enough torque to keep me going with less throttle. I may be changing these for my 408.

 

how do you like those 4.10s krambo?

 

That ratio came stock...I know of nothing else I would of opted for the 4:56 if I could have though

 

mine is locking at 40 and im thinking about lowering it some more. when the cutout is open it sounds like it is chugging along but with it closed i dont even hear it. maybe the exhaust tone is playing tricks on our minds?

 

I would like mine to unlock later when towing .right now unlocks at 57% under load towing about another 5% would be real nice ......can that be changed same wway as lock up setting ??

 

Yes, absolutely. Both the lock and unlock speeds can be adjusted.

 

Normal driving is locked at 52, WOT is 3rd gear @ 105mph

John

 

Would installing say a 3000 stall tc without a tune cause your truck to sense a "trans slip" in 4th and throw a code?