Today I headed to the gas station to fill up the "new" truck. I was spliting gears just checking things out when a problem seemed to occur.

I was in 4th high and started up an incline. I hit the button to take the rear to low, let off the gas press the clutch and got a kind of grinding gear sound from the rear.

I was able to pull it back in to high and got to high 3rd. Upon checking it out, I have no problem split shifting all the way up until going from high 3rd to low 4th or from high 4th to low 4th.

Am I doing something wrong?


'63 Chevy c60 dump