Flywheel Question

[njtruck1964]

I am changing a damaged flex plate on a 1999 6.5L Humvee. Can anyone recommend a heavy duty flex plate and part number?

Question #2 - How many teeth does the plate have?

 

[Mogman]

ATP Z-135 is for the TH400 and Z-136 is for the 4L80.
As far as I know there are no real HD options.
99% die from a bad starter chewing up the teeth
Both have 139 teeth.
IIRC the TH400 has a 10.75" bolt pattern and the 4L80 has a 11.5" pattern, you definitely would want to try fit it to the torque converter before install.
For the TH400 you would pick chevy CK pickup 1982-1995 6.2L and for the 4L80 it would be 1996-2000 6.5L although they are interchangeable as far as 6.2/6.5L

 

[86humv]

In all Hmmwv parts manuals, the flexplate is a 14077157 for 6.2, 6.5NA, and 6.5 turbo.
NSN 2815-01-148-3771

 

[Retiredwarhorses]

All hmmwv flex plates are the same…6.2, 6.5NA, 6.5TD