Anyone know what year it went from 23 to 29 spline? Or was it always 29 spline on the diesels?

thanks.

 

Maybe that's the difference between the HD and regular versions?


http://dodgeram.org/tech/transmission/nv4500_spec.htm

The NV4500 is a 5-speed constant mesh manual transmission. All gear ranges including reverse are synchronized. The transmission is a top loader design with a cast iron gear case and an aluminum shift cover.
Two versions of the NV4500 are used in 1994+ models. A standard duty version is used for 5.2L and 5.9L applications and a heavy duty version is used for V10, and Cummins diesel engines. The main differences between the two versions concern the larger input and output shafts used in the heavy duty version.


NV4500HD Specs:

Manufactured by New Venture Gear
Synchronizers: Carbon fiber composite
Input shaft: 1-1/8" 10 spline (V8 version - order code DDP)
Input shaft: 1-1/4" 10 spline (Diesel, V10 version - order code DDX)
4x4 Output shaft: 1-1/2" 29 spline

 

I thought the 5 spd in the 5.2 and 5.9 gas engines was a NV3550. The one I drove wasn't a granny first gear.

Thanks for the link