charm
Active Member
75 D300 dually, 360, 4 spd manual (with granny low).
Got my rig running nice (crappy engine electrical work performed by previous owner). Around town, it's great! Runs smooth, reasonably quite (the holes in the floor and lack of sound deadening make it a little louder). But, above about 50 mph, well, it wants another gear. I can't tell you the RPM since it does not, nor has it ever had a tach, but it's turning a lot of revs. It'll hit highway speeds, but hearing protection is mandatory as the poor engine screams from the RPM.
I'm trying to find the easiest and least expensive way to solve this (I'm hoping they're the same). Clearly I need to ID the trans and gear ratio. I suspect the trans is not original based on the giant hole that had been cut into the tunnel around the shifter, but it could be, the hole clearly wasn't for clearance. I assume the first step is to ID the trans and gear ratio and I could use some help with that.
Next, is there an opinion on which route is best, easiest, cheapest? I do use the rig to haul and want to make certain it's still a valuable hauler. Maybe swapping to an auto would work? I have no clue and could use some direction.
Thanks!
Got my rig running nice (crappy engine electrical work performed by previous owner). Around town, it's great! Runs smooth, reasonably quite (the holes in the floor and lack of sound deadening make it a little louder). But, above about 50 mph, well, it wants another gear. I can't tell you the RPM since it does not, nor has it ever had a tach, but it's turning a lot of revs. It'll hit highway speeds, but hearing protection is mandatory as the poor engine screams from the RPM.
I'm trying to find the easiest and least expensive way to solve this (I'm hoping they're the same). Clearly I need to ID the trans and gear ratio. I suspect the trans is not original based on the giant hole that had been cut into the tunnel around the shifter, but it could be, the hole clearly wasn't for clearance. I assume the first step is to ID the trans and gear ratio and I could use some help with that.
Next, is there an opinion on which route is best, easiest, cheapest? I do use the rig to haul and want to make certain it's still a valuable hauler. Maybe swapping to an auto would work? I have no clue and could use some direction.
Thanks!