DodgeTalk Forum banner

Status
Not open for further replies.
1 - 5 of 5 Posts

·
Registered
Joined
·
457 Posts
Discussion Starter · #1 ·
A friend of mine is considering ordering a 09 Ram 2500 SLT QC, 6.3 box, 4x4, LSD with the 6.7 CTD. He's always liked manual shift trucks. He could get away with another 1/2 ton but wants a 3/4 ton CTD. Most of his driving is highway and country roads with little traffic.

He tows a camper trailer once in a while that weighs around 6500 lbs. plus his passengers and other gear. He'll haul a box load of firewood from time to time too. The truck isn't going to be worked to hard.

looking at the gear ratios of the transmissions the G56 has a .79:1 6th gear and the 68RFE has a .625:1 6th gear.

G56 .79 x 3.42 = 2.702 final drive ratio
68RFE .625 x 3.73 = 2.331 final drive ratio.

Which set up will get better highway mileage while "NOT" towing or hauling anything-
A manual shift (G56) with 3:42 gears or a auto (68RFE) with 3:73 gears?

Neither one of us know anything about diesel trucks.

Thanks, NYH1!
 

·
Registered
Joined
·
35,850 Posts
About the same. Thats the reason they added the 3:42's because the auto was killing the manual with the 3:73's
 

·
Registered
Joined
·
79 Posts
if your looking for mileage go with the higher geared one, which looks to be the auto with 2.3 final ratio.
 

·
Lovin My Ram
Joined
·
525 Posts
^^ that would get sick diesel mileage (cause it doesnt use gas!)
 
1 - 5 of 5 Posts
Status
Not open for further replies.
Top