ive got a 95 dodge with i believe the 47rh transmission. i want to do a 6 speed swap. i was thinking about swapping in either a nv5600 or possibly a ford zf 6speed. i don't know much about the zf6, maybe one of you do? ive heard their more common and cheaper to rebuild than the 5600 and alittle easier to shift?

anyone done either of these swaps? and possibly a parts list? i was looking for auto to 6 speed swaps but couldn't find one.
thanks in advance.

 

It is a good bit of work, but I have always thought the ZF shifted a little smoother. Some models also have an internal oil pump that can be plumbed to a cooler if you are regularly towing very heavy loads.

 

Why not consider a G56? They shift like butter!

 

I drove a ZF6 for a couple years in a 2000 7.3 PSD F-350. I have owned several different manuals and that trans is hands down the best one. The ZF6 is factory installed in much heavier trucks than pickups. It is the only manual trans I have ever had that has a nice factory cooler setup. Shifted smooth and ratio spacing was nice. No experience with an NV5600 but compared to an NV4500 and a G360 5speed there is a hugh difference in durability, ratio spacing, quality and shifting performance. The ZF6 was the best thing about that truck.

 

The ZF also has a slightly taller OD ratio than the others:
G56 = .79
5600 = .73
ZF-6 = .72

The G56 does have a more serious Low ratio though:
G56 = 6.29
5600 = 5.63
ZF-6 = 5.79

Just some food for thought. Also to consider, the 5600 is almost a bolt in, and the G56, which Tate pointed out, does in fact shift VERY smoothly, and is closer to bolting in with stock/oem parts.

 

The G56 only requires a small modification on the tranny crossmember, I had to notch and lower it 1/2 or 3/4". I was even able to utilize the factory tranny mount.

The G56R (behind the 6.7's) has a different gear ratio from the input to countershaft, so all the ratios are slightly taller. OD is a 0.74:1 or so vs the 0.79 of the 5.9 G56's.

 

Go ZF for sure, the 5600 hates to be speed shifted and grinds 3rd on my friends HD

 

ive heard that the g56 isnt as durable as the zf...has anyone done this swap or something similar?? doesnt seem like i can find any threads

 

I swapped the G56 into my 12v. I love it. 550hp hasn't broken it yet.

 

thats good to know. im alittle over 500 and plan to do twins at some point. looks like the g56 is cheaper than the 5600 but not by much...where did you find your g56?

 

Found one being advertised on a local forum, picked it up and a 271 t-case for a pretty good deal.