Ever since I added the Marlin to my '85, it has made some serious gear noise at highway speeds. I run down the interstate pretty regularly and once I pass 55mph the noise is serious unless I'm under power - any time I'm coasting or decelerating. Everything works fine and it doesn't make any noise at around-town speeds. So, is this just the price to be paid for adding another box full of gears, or do the cases need to be rebuilt?

 

They are noisy.

:wabbit2:

 

Thanks for the input. That is kind of what I thought, but it's good to have some reinforcement.