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10 spline Lomax yes/no?

CharlesC83

CharlesC83

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Chime in CK5ers.

Is the 10 spline Lomax a bad idea? Would the 10 splines be stressed? I wonder about the 3.0 low alone with my 465 might be good enough for slow technical crawling?

I’m talking my specific truck.
79k10
6.0ls stock cam
60/14b 5.13
40”s
Sm465/205

Would anybody run just the Lomax behind the 465? Or do the magnum?

I debate a 4l80e with myself but the gear spread
seems shitty.

They show having Lomax kits in stock? I’m wondering without calling them if the 10 spline would need to be machined later if I wanted to switch it to a 32 spline input? As in the bearing size. I found no info on their site about this and would have to call them.
 
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I’m thinking the magnum box first. With the short adapter and main shaft. I would doubt the input gear alone would be available from jbconversions. So a person would be stuck with a 10 spline input. And no way to update it later if the gearing wasn’t enough. The kits from job conversions disappear and don’t come back regularly.

But the 3.0 alone may be awesome?

Just talk me out a 4l80e swap fellas.
 
The auto vs manual debate is ages old. I like a manual but hate the crappy gear splits in the 465. Lack of overdrive isn't fun, but is your setup bad with the 40s?
What rpm are you running at highway speed?
 
6872xtc said:
The auto vs manual debate is ages old. I like a manual but hate the crappy gear splits in the 465. Lack of overdrive isn't fun, but is your setup bad with the 40s?
What rpm are you running at highway speed?
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3k rpm at 65. I hear you on the debate part, not trying to make a pure manual vs auto here though. I’m only asking for the real world answers from the knowledgeable ck5 members. :D

I’m thinking the magnum is the only way out of this predicament. I asked my gf this morning what she would do. But she said her crawl ratio in her Jeep renegade is perfect for the local coffee hut drive through.

Truck will get trailered if farther than 100 miles to trail head.
 
Bent77 said:
Where Are you planning on wheeling?
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Snow wheeling, but also love slow speed Moab style, also wild bill is a local trail for me to play and it’s slow crawl speed style. I’m a slower easier throttle pedal driver , mostly.
 
Honestly, the 465 is pretty usable Offroad. If driveshafts are already in your future, consider a 4500

In terms of the extra gear, yes it is useful. But not all the time. At 52.5:1, I use 2nd and 3rd a lot. In the snow I like more wheel speed. Both trucks I’ve had were 400 or more crank HP
I have a doubler and rarely use it (105:1). Sliding scale of course, more use as it becomes more technical. Not for torque multiplication, but rather because is keeps the engine RPM up and the suspension calm

Lomax is good, but perennially flakey about output, production, or replacing parts

Using a second T case nets you more choices of ratios.

Going to an automatic you will want some more ratio. @skunked is running a bbc in front of the same tire size and ratios you use with a magnum/205/400 set up. He pushes it fairly hard, but has been happy with the overall ratios
 
CharlesC83 said:
3k rpm at 65. I hear you on the debate part, not trying to make a pure manual vs auto here though. I’m only asking for the real world answers from the knowledgeable ck5 members. :D

I’m thinking the magnum is the only way out of this predicament. I asked my gf this morning what she would do. But she said her crawl ratio in her Jeep renegade is perfect for the local coffee hut drive through.

Truck will get trailered if farther than 100 miles to trail head.
Click to expand...
Yeah, no need for another debate, eh?
But trying to talk you out of a 4L80E swap vs a 465 is tricky. I like the ease of an auto trans on quite a few obstacles, but a manual will just continue to grind forward in lots of situations.
But I wouldn't buy anything aftermarket for a 10 spline. Go to 32, even if you keep the 465 and buy a magnum.
 
With respect to spline counts, typically more is stronger. Factory 10 spline combos are notorious for wear so I wouldn't buy a 10 spline Lomax unless it was a used part that was a really good deal.

In addition to the spline count "issue", you have to consider availability and serviceability. I WANT to add a Lomax to my Doubler but with the limited / rare production I'm afraid of buying a unicorn I can't fix in the future. If the cost between the 2 boxes was further apart (like double the price, etc) it might be hard to justify the cost of the Magnum over a cheaper Lomax but it's not, they are both in the same budget ballpark so the Magnum is the smarter buy because of the stronger parts, serviceability and consistent production.
 
Bent77 said:
Honestly, the 465 is pretty usable Offroad. If driveshafts are already in your future, consider a 4500

In terms of the extra gear, yes it is useful. But not all the time. At 52.5:1, I use 2nd and 3rd a lot. In the snow I like more wheel speed. Both trucks I’ve had were 400 or more crank HP
I have a doubler and rarely use it (105:1). Sliding scale of course, more use as it becomes more technical. Not for torque multiplication, but rather because is keeps the engine RPM up and the suspension calm

Lomax is good, but perennially flakey about output, production, or replacing parts

Using a second T case nets you more choices of ratios.

Going to an automatic you will want some more ratio. @skunked is running a bbc in front of the same tire size and ratios you use with a magnum/205/400 set up. He pushes it fairly hard, but has been happy with the overall ratios
Click to expand...
Both of my driveshafts are new. The front is the less desirable GM 3R type or however it's said, rear is 1350 CV. They would need length change after the magnum. but that change would make my front angle better, and possibly clock the 205? Not sure if that can be done with the magnum or if thats too many adapters?

I appreciate all the replies. I do have a Jeep with a Double low and an automatic, and it is nice crawling. But I do like the way this truck drives with the manual. It is slow and clunky like a dump truck transmission. But I like it. My 465 and 205 are both fully rebuilt and inspected, by me. And I would have to tear it down and exchange the main shaft. But that is easy.

I've probably said it before but I spent 10 years as a rebuilder in a transmission shop. I don't really want to debate auto vs manual. I would suppose personal preference and strength would be my concern. And , I like this transmission. I feel this truck won't benefit from an OD that much. 60-65mph is smooth and nothing is vibrating or shaking really. I personally don't want to go faster than 65 mph in this truck, that is just me though.
 
The magnum is drilled to allow the clocking of the 205

Not sure where what your vibration is. I run my 465/205/203 37/4.10 at 80mph no vibration. You may have a tire or shaft imbalance or even a driveline angle issue
 
I have been looking at the 10 spline vs 32 spline issue. I currently have a 465 mated to a 205 fig 8, 10 spline. I have 2 np203 range boxes and an extra 205 10 spline. Off road design doesn't like the 10 spline and their doubler requires changing input gears and boring the case for the big bearing. This turns into a bunch of money to make my stuff work. They do it for strength and durability which I fully support. Northwest fab will sell a doubler kit for the 10 spline no questions asked. I can build a doubler with their kit for $950. Cheaper by a lot but probably not as good. Is it good enough?
 
Bent77 said:
The magnum is drilled to allow the clocking of the 205

Not sure where what your vibration is. I run my 465/205/203 37/4.10 at 80mph no vibration. You may have a tire or shaft imbalance or even a driveline angle issue
Click to expand...
I did not catch that the magnum is clockable. that's sweet.

I currently have no vibrations at speed.
 
obijuank5 said:
I would not use ten spline anything ever forever and ever. Like ever.
Especially when a 32 spline 465 exists.
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Morgan Freeman Reaction GIF by MOODMAN
 
HankScorpio said:
I have been looking at the 10 spline vs 32 spline issue. I currently have a 465 mated to a 205 fig 8, 10 spline. I have 2 np203 range boxes and an extra 205 10 spline. Off road design doesn't like the 10 spline and their doubler requires changing input gears and boring the case for the big bearing. This turns into a bunch of money to make my stuff work. They do it for strength and durability which I fully support. Northwest fab will sell a doubler kit for the 10 spline no questions asked. I can build a doubler with their kit for $950. Cheaper by a lot but probably not as good. Is it good enough?
Click to expand...
I've seen the NWF 10 spline kit as well. ORD says the 10 spline can snap. I just take their word. But I hear ya.

I am an ORD Kool aid drinker myself. I'm just gonna do the Magnum with the 465. This thread has settled it for me.

A well used NV4500 is $1000+ in my area and then my bell housing etc won't work. And I don't see me barreling down the highway at 80mph in my rig. I could be wrong though. It's not from lack of HP, the 6.0 scoots OK.
 
CharlesC83 said:
I have your build thread open currently in another tab combing over your magnum install to the 465, I know you went NV4500. I am jealous.
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Thanks, I too have consumed lots of ord koolaid and I love it. I have been super happy with everything I’ve used from them and they’re nice guys on the trail too. Always willing to help anybody.
Everyone told me to go 4500 when I was building my 465 but I was stubborn because I already had it and the ball was rolling. But hey, apparently I like buying truck parts!
 
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