:laughing: You actually think you will see 60 mph?

Well, you actually might IF you hold it to the floor for several miles, and have a 180 or 215 hp pump on the truck (assuming stock governed pump).

Losing OD with 4.10s is a very, very dumb decision IMHO. Hope you like cruising at 50.

 

I'd agree with that.. No way i'd put a diesel with a 1:1 tranny.

Edit: cant you swap in the dodge tranny for the time being? you wouldn't be able to run a front shaft but i'd think driving down the road in 2wd is better than drivng down the road at 45-50.

I have a 24v/nv4500 that i swapped in. I shift into OD around 45 and when i get to ~70-75 i wish i had one more gear

 

Clearly you need to send me the truck. I never really liked the 465, due to the wide gear splits. It's really only a 3 speed with a deep low.Unless you dropped to 3.08's or something, I think you'd be better off with a 5 or 6 speed. Investing any money in a 465 to work even in the interim, is a waste I would think...

 

Clearly you need to send me the truck....

You're one of those funny guys aren't you:laughing:

 

Well you have two options

1: Get fuct :flipoff2:

2: Re-gear the axles to 1:1

Hope this helps :laughing:

 

Listen here poser:flipoff2:


You're just jealous since I have the cooler cummins swap, the longer lasting shoulda built a buggy thread, and just how awesome I really am.:flipoff2:

 

I had no luck with the sm465 and cummins.It was a huge waist of time and $ I run a
nv5600 with a divorced np205 now and works great, let me no if u need part i have lots

 

What didn't work for you?
I may end up seeing what you have for parts at some point.

 

My roommate is doing that exact thing in the driveway right now, but he is not using the bread van adapter.

 

how is he doing it?

 

3 sm465's later i gave up. They dont seem to hold up to the cummins. Maybe i just have bad luck but i still broke 3 of them. Plus with 4,10s with 35s i went nowere fast. The overdrive help huge

 

Let me guess; you either broke the input shaft or the 10 spline output shaft, right?

spidr: you can't use the 1-1/2" input shaft with a standard GM bellhousing setup because it's too long. Also, the biggest clutch you can fit on a GM flywheel is 12", which is marginal for a 6cyl. Cummins. I'm using the Dodge adapter set with a custom 13" South Bend clutch.

 

The sm 465 is rated to handle 420 lb. ft and the cummins puts out more then that. It would never last long even if u babied it. i was considering doing this swap.

 

And, you know this from experience, right? I love it when people on internet forums make statements that have zero basis in fact :shaking:

It's rated for 450lb-ft, just like the NV4500. The main limitation is the 1-1/8" input shaft. Switching to the 1-1/2" input shaft increases the torque handling capacity big time. The rest of the trans has no problem handling huge amounts of torque.

 

no i dont think it would hold 7 times a stock sbc i doubt it would hold and i got my info from here on pirate at 420 ft lb is it right maybe not but im guess its really close and u get the point

 

Fair enough. I'll just take your word on that I guess.



Did you ever think there was a reason I picked 7 though:shaking:

 

I didn't realize that was you. I've actually had that bookmarked for quite a while.
The countershaft in an overdrive trans I hadn't actually though of. Kind of makes me lean towards the 4 speed that I know though. Thank you for some insight.

And to clarify, the strength of the trans is NOT something that I'm worried about. There are other parts of my truck that would blow up first. I have some experiance with them.

 

I didn't realize that was you.

Yup, that's me. If you're interested in doing the 465 conversion with the Dodge parts I can machine up an extra spacer ring (locates the 465 in the larger diameter 4500 bellhousing) for a reasonable price. Everything else is minor fabrication, although some TIG welding will be needed. I will be doing that part of my swap in the next week or two and as usual I will post up pics in my build thread. It's actually pretty simple stuff. The only part that's tough is paying for the clutch

 

He also agreed to it being inputs or 10 spline outputs. I would be upgrading to a 1.5" input(from 1-1/8") and running a 32 spline output, which is a serious upgrade.

I've been told a lot of things are dumb ideas until I do them, but if the only reasoning is the lack of overdrive, then I'll regear. So far that seems to be the only reason to spend the $1-2000 on a 4500 or 5600.

 

So you put the 456 in and just move the investment to gears? Seems like a potential wash?

I hated my 24V w/ 410's at anything over 65mph. Needed another gear. Don't miss it.

 

Whats wrong with the Dodge OD? I am looking for a 12v with a pre 96 auto and OD for my chevy truck. I need to get a 4wd so I have the transfer case too. Im doing the same thing as you did. Just my truck was near free....... Looking forward to seeing how your swap goes. What crossmember are you using? Custom or Avalanch or?

 

I don't feel like spending 5 grand plus on an auto to keep it alive.

Every bracket will be scratch built, I don't buy off the shelf parts, I'd rather make my own.

 

I don't feel like spending 5 grand plus on an auto to keep it alive.

And "keeping it alive" is very relative with automatics. You can beef it up so it doesn't break outright (maybe) but what will it's lifespan behind a modded engine be? 30,000 miles? 50,000 if you're gentle and lucky? So, every few years you get the privilege of spending another several grand to freshen up your slushbox. Doesn't sound like a good plan to me...

 

Something else to consider is that the 2nd to 3rd gear split in the 465 is quite a bit bigger than in the 4500, which may be an issue with the narrow power band of the Cummins.

FWIW, I blew my 4500 ~1 1/2 years ago and picked up rebuilt 4500 with the updated 5th gear, etc, for ~$1250 + core. Not sure what is involved in adapting a 205, but I think its pretty straightforward using the the first gen case.

Have you considered a 6-7 speed out of a medium duty?

Pete

 

Have you considered a 6-7 speed out of a medium duty?

Pete

Yup, looked at those, right up to the 10 speed road rangers. I think a 10 speed would be real cool and If I can find one cheap enough, I'll go that way. Likely a much stronger option than anything else being discussed

i think the clutch will be your week point.

you might try flipping a 205 around for a underdrive unit. why not a truck with 2 tcases to match the blazer

It's been discussed before in general, and I know of at least one truck using a 203 as an underdrive, but since this will be the DD and hauler, I don't think that reversing the thrust direction would make for a long and happy living 205. I've thought about dual cases too, but unless I could shift it on the fly, it would be a waste for day to day driving.

 

good point

 

"I've read a lot of bad things about nv4500"

what ever nv4500 are awesome!

 

I've read a lot of bad things about nv4500s, and nv5600s, and despise autos(we don't have a good history), and I know I would be losing overdrive. I also know that the top speed would suck, the truck has 35s and 4.10s, but on the other hand, it should have all the gearing and power in the world to haul anything up to about 60mph.

what ever nv4500s are awesome the go the OD and are very tough.[/QUOTE]

blahblah

Wow...........You must be da'man:shaking:

Got anything usefull to contribute, or would you prefer to just keep running your mouth?

 

I've read a lot of bad things about nv4500s, and nv5600s, and despise autos(we don't have a good history), and I know I would be losing overdrive. I also know that the top speed would suck, the truck has 35s and 4.10s, but on the other hand, it should have all the gearing and power in the world to haul anything up to about 60mph.[/QUOTE]

what ever nv4500s are awesome the go the OD and are very tough.

 

what ever nv4500s are awesome the go the OD and are very tough.

blahblah

Thanks for the pearls of wisdom

 

Ever thought about running Spicer 3053A from a duece behind it? Tough as nails with an a .85 OD. See plenty of them being used with 4bt swaps. Assuming you don't have a problem running a divorced 205.

 

Didn't know they had an overdsrive. I'll have to look into that, most of my junk runs divorced cases.

 

465, why not????
most people with the 4500 dont tow heavy in 5th any way so not to blow it up.
If your in california you cant to leagaly tow over 55mph anyway.
If it turns out to be to slow, regear the axles.
The early gen one dodges came with an auto and no overdrive. They ran 3.08s in most of them with stock little tires. I would say 35s and 3.73 0r 3.55 would be fine.
and in the end its up to personal preferance. You arent telling him to build a different truck because you think your idea is better, so why tell him what trans to use? he addressed the strength issues, so let the man run his tranny!

 

47re has a .69 OD At 2000rpms is running 74mph
nv4500 has a .73 OD, At 2000rpms is running 70mph
3035a has a .85 OD, At 2000rpms is running 60mph
sm465 is 1.0, no OD, At 2000rpms is running 51mph

So where does the power band run out on a p-pumped 12v?

 

What rear gear and tire diameter did you use for these numbers? To make a direct trans work really good, I'd want 3.08s and fairly tall tires (33-34) along with lots of gears (at least 6)
Travis..

 

Currently it's running 4.10s and 35s.
If I go to 22.5s like I'd like to do, they measure around 39"
Using 39's, it changes the numbers to

47re has a .69 OD At 2000rpms is running 74mph(35's), 82mph(39's)
nv4500 has a .73 OD, At 2000rpms is running 70mph(35's), 78mph(39's)
3035a has a .85 OD, At 2000rpms is running 60mph(35's), 67mph(39's)
sm465 is 1.0, no OD, At 2000rpms is running 51mph(35's), 57mph(39's)

 

If you go to the 39's you're fine with a 1:1 final in the trans. You would turn 2300 at 65MPH, which is a bit highish but OK. Regearing to 3.73's would put you at 2090RPM at 65MPH, which is a decent cruising RPM, especially for a tow rig. Keep in mind that OD trannies aren't normally rated to pull their full GVW rating in OD, so you would effectively have a worse-geared 4 speed if you kept your current gear/tire combo with an OD 5 speed. Finally, if you gear your setup for a 1:1 trans, you have the option of switching to the 5 or 6 speed FS series Eaton-Fuller transmissions later, which are far better than the NV4500 or Spicer 3053A. The Fuller 6 speeds are also available with an OD 6th, but like any OD trans pulling in OD makes a lot of heat. The 1:1 top gear transmissions are definitely better for pulling weight.

 

we have a 12V cummins/465/205 running 4.10s on 33s in a 1 ton dually, it does very well thanks to the gear vendors unit:laughing:

We haven't gone through a single trans or transfer, but on the 3rd GV unit. It does routinely kill dana 70 rear shafts but 4 of those in 350K ain't that bad for the loads it moves routinely.

 

well a 1:1 tranny would be a very bad idea i have a 03 dodge 3500 srw with the nv5600 and 4.10 from the factory and with the stock tires on it i hated driving it because you have the rev it so high to stay at 70mph i lifted it and put 36s on it and it made it better for driving around and towing i have really thought about regearing to 3.73 just to help out with some higher cruising speeds

 

It would only be a bad idea if he did it and didn't think about the final gearing. Have you been reading the thread?
Travis..

 

I still say just skip the 465 and go right to a 6 speed MD truck transmission. If you get one with a OD gearset you have enough OD to get by with the truck "as is" with 35" tyres and 4.10's as well as deep enough gears at the bottom to deal with 39" tyres and 4.10's with the same caveat that a 7.xx to 9.xx first gear is going to send alot of torque downstream to components that may not be real happy getting hit with that much torque.

 

The 6 speed MD Fullers with an OD 6th don't have the super deep first gear like the non-OD 6 speeds. 1st gear is 7.05:1, and OD is .78:1.

I agree it would make a good choice, but your argument assumes the OP has 2 grand burning a hole in his pocket :shaking:

 

There is a dude on Oilburners in the 1st gen dodge section with an MD 6 speed direct trans in his 2wd dually. He raised the cab like 8-10 inches (don't recall right now) to make it fit without severe fire wall hacking, it is kinda silly. He's also claiming some incredible mpgs, but I chalk that up to the internet.
Travis..