so.. do you think it would cost the same to build the 4l60 up vs building the 4l80e up? looked at raptor `700r4 but i dont need a whole trans just parts, so i looked at their parts list and its confusing as heck. then like i said i have some stock parts just sitting so i want to try to save some cash and use them. but if i need to upgrade the stock parts then i will but i have no ideal what parts i need

 

a stock rebuild for the 4l80 sould not be different than the 60... the biggest thing is dual feeding it and getting in the extra clutches.. and modifying the plate.. a lot of people want to just do a shift kid to firm up shifts , that works to a point but a person has to remember the more line pressure you have it shoves the converter forward and is hard on the thrust on any engine..volume will give the firm shift and more durable than pressure.. some of the raptor builds are great set ups... patc has a lot of good deals

 

Keep it simple. Go with a Dodge trans and a 205. Doesn't matter if its manual or auto, but all the aftermarket support is there for a lasting combination.

Getrag G360/NP205 (factory combo)
A518(non-lockup)/NP205 (factory combo)
47RH(lockup)/NP205 (piece together with factory parts)
47RE(lockup)/NP205 (piece together with factory parts, and controller)
NV4500/NP205 (piece together with factory parts)
NV5600/NP205 (piece together with factory parts)

... plus, a divorced NP205 works with any 2wd trans that came from a 5.9 cummins - pickup truck, or medium-duty truck.

 

just talked to a transmission shop he once i told him what its going behind he said he wouldnt build it for no amount of money. he said to go with a 400 or 47rh. he said in order to fix the 3/4 clutches in the 700 you have to firm up the shift then with the cummins you start breaking hard parts. so now i think ill be going with dodge, maybe get a nv4500 or 47 but last search for them showed up nothing. maybe give the junkyards a call

 

Buy a whole truck for parts and sell off what you don't need. Much cheaper that way.

 

just a question, of course im having problems with finding a passengers side drop trans mission for the cummins(divorced is a option) but is there any 94+ cummins trans that you can make passengers side?

---AutoMerged DoublePost---

what about overdrive from gear vendor?

 

You can use a 47rh with a clocking ring that also acts as a spacer for the NP205 (I used a Skyjacker unit on a Ramcharger conversion and it worked perfectly) or run an NP241D/HD from an '89-'93. The 241 will bolt up clean. The clocking angle is a bit different, so some people overfill the transmission a bit to make sure the TC gets its share of the fluid. I personally don't think it's necessary and don't know how comfortable I am with overfilling the transmission.

Just remember that you need a 23 spline TC from an automatic truck.

 

was told this is a 727 with 205 but i dont know jack about drodge trans but the tail shaft to the 205 look too long is this a od unit?

 

The 4L60 will never hold up to the Cummins. I tried to run one behind my Cummins. I had it behind the turbo charged 6.2, and it did great behind it. I had built it up to where it would take up to 500 ft.lb. of torque, but not at 1600 rpm's. And that was with out a lock up converter. It would be a lot worse with one. I now run a 4L80e and have for 15 years with no problems.

 

If it is, indeed a 727, the tail shaft isn't too long; what you're seeing between the transmission and the transfer case is the extension housing, not an overdrive. The 727 4x4 tail shaft extends about 8.5" from the back of the transmission. The factory extension facilitates the mounting of a New Process Gear transfer case and serves to support the entire assembly on the crossmember.

I can't see enough of the transmission to tell you if it's a 727 (it's likely, since 727s weren't overdrive, the designation for the overdrive Torqueflite 8 is "A518"/"46RH"; "A618"/"47RH" for overdrive and lockup), but that's definitely an NP205, though.