GM 14-bolt FF Rear End with 149k miles
Hi to all, Our TV is a GMT400 1997 GMC K2500 7.4L Burb with 149k miles. It is 8-lug, 3.73, GVWR 8,600, with GAWR RR of 6,000 lbs for the full floater rear axle. We believe the rear end also has 149...
Forum Discussion
This is incorrect. The G-80 is a locker and it does have clutces. I have spoke directly with Eaton and was told not to use any friction modifier. The use of friction modifier will shorten the life and or cause the differential to malfunction.
ScottG wrote:
It's either a locker or it has clutches. It's isn't both. And it will do no harm (or good) to add friction modifier to a locker dif.
If it actually has clutches then a friction modifier is generally recommended. Failure to use a FM where it is required causes the clutches to chatter and engage roughly which causes wear and breakage.
